With car seats you get two types of manufacturer - the ones which make and test their own products, examples Britax, Maxi Cosi, Cybex - and then the manufacturers which buy car seats from a generic manufacturer and rebrand them with their own fabrics and logos.
Most high street stores in the UK rebrand from a French company called Team Tex. There are other generic manufacturers in Europe, but I don't know their names. In recent years, generic car seat factories have sprung up in Asia too, partly because of lower import/export costs and partly because several Asian countries are beginning to require the use of children's car seats by law for the first time and as part of the UN many of these countries are using the UN ECE regulation which is the same one that is used all over Europe. For this reason we are now seeing even more cheap, generic car seats for sale. It's difficult to keep up with all the branding.
What you find with generic seats is that they may not have the features of the bigger manufacturers. For example many of the generic seats which are approved for both rear and forward facing can only be isofix fitted for forward facing, and need to be seatbelt fitted for rear facing, which can be a bit of a pain especially if you don't initially realise.
But the main concern I have with them is that when you look at crash test results from places like ADAC (they provide the test results that Which? and similar publications in other European countries publish in their own languages - you may have heard of Which? Best Buy/Don't Buy) the generic seat models tend to do very poorly. Sometimes they do OK. I have never seen any get a score higher than "Satisfactory", except for rear facing infant capsule type seats, which just seem to be such a simple design that you can't get it wrong! Slightly more than occasionally, one of the generic seats will actually break apart as a result of the forces of the crash test. It's better than not using a car seat at all, but I would not use a generic seat if I could help it.
I can't tell why that one has such a poor recline option, usually it's because you have to belt fit it in RF mode but it doesn't seem to be the case there. Anyway if they're forced to be so laid back you probably wouldn't want to RF much more than the minimum, which is a bit of a shame - nice to have the option to RF for longer. Under i-size the law is no forward facing before 15 months, but it's recommended to rear face as long as possible - it's just much safer frankly.
Anyway, for a 0+/1 seat I'd go for Joie 360 Spin over that one. You can often find them for ÂŁ160/180 on sale and it has much better features and a good trusted safety rating.
OTOH, as you already have Pebble seats - are these the original Pebble, or are they newer i-size ones (Pebble Pro/Plus/I forget all the suffixes) with a height limit on? Are they both the same version? Maxi Cosi have THE MOST CONFUSING set of base and seat compatability rules, so I would write an email to them with either a photo of the seats or the definite full model name/number and ask which currently sold bases are compatible, if you want bases for them. The 2way base is the same as the One base, apparently. There is a chart here you can download, but it only has the Pebble Pro, no older versions:
www.maxi-cosi.com/international/base-compatibility
You may also consider buying the appropriate base second hand. It's not really recommended but I do think it's a bit less risky than buying the actual seat part second hand, since most people are honest and would not sell on a seat/base after an accident. (Of course, not everyone is honest).
If you can find out exactly which Pebble seats they are I will try and have a look for you if you want. Or you could go into somewhere like John Lewis with the seats you have and just ask to test which bases they go into.
If you think you'll use the bases to purchase the next size of seat and click in, then I would recommend getting a base which has the option to take a rear facing seat, just in case your children outgrow the baby seat before 15 months. On the other hand, you could forget using bases for the toddler seat and just buy seats which don't need a separate base. There are even longer-lasting rear facing seats for example which just fit using the seatbelt, last until around 7 years old and cost about ÂŁ200, which is less than some of the Pearl models. Also, if you do think you'll use some variation of Pearl seat on the base, I would recommend trying this out in your car/s at a baby store, even if you have no intention of buying the toddler seat yet, because it's useful to see in advance what the recline is like and how much front seat space you have with the seats installed - it might influence whether or not you go for the base.
Sorry for the essay! Hope it is a bit helpful.