I've owned all - and my hands down "winner" or first choice which I would recommend to everyone would be..... .....
The Uppababy Vista! It really is very user friendly - durable, smart, functional and an absolute DREAM to push.
The Bee + to me - was lovely at first - until the wheel shimmy started - then by 2y old (despite ds being small) the harness was too short for him when wearing his winter coat. This was the Newest Bee version too - with harness longer than the original Bee - but it was still not long enough.
Also - one day ds spilt a carton of milk over the seat - and boy was it a faff to dismantle and wash it - and some of the milk seeped into the plastic seat frame and was impossible to wipe out as had gone into inaccessible places - so not very toddler friendly IMO! I wanted to use rear facing - and there was no footrest as my childs legs were getting longer - so all in all - it was not a happy experience.
As for the Cameleon - After 4 months use - I removed the top cover and hood to launder them - and upon doing this discovered a large hole in the seat where stitching was coming undone! My son was well within the weight limit - so it wasn't caused by overloading. Bugaboo were fab asking for the chassis code - in order for them to send a new seat - so I lifted the seat off to check this code - whereupon I saw a very large frayed hole had developed in the basket fabric also! I only needed to send photo's and bugaboo replaced this also - but really I lost faith in the product and once new parts arrived (10 days later) I sold it on. It was the least durable pram I'd ever owned (after 4 kids and a bit of a pram obsession that is saying something!).
What I LOVE about the vista is how light and easy it is to push - how great quality the components and fabrics are - right down to the superb quality wheels and ball bearings. I love how the seat is high up - giving your baby a great view and raising them up from traffic fumes or unwanted attention from dogs! The basket beneath the seat is easy to access and carries a phenomenal amount of stuff - with ease. 5 carrier bags of groceries today (all my baking ingredients so bags of flour/sugar etc and also fruit and veg for my big family).
I think the Vista is the number one choice in the USA now and I'm not at all surprised it came first with Which.
It can fold in one easy step in one piece with the toddler seat on forward facing - which is marvellous and it's compact folded compared to many other high - end luxury prams. It also includes a seperate carrycot in the price - which is organically lined and is suitable for overnight sleeping (no need for a moses basket then!). The suspension is good and it's a dream to push.
The only people who might not get along with this buggy are those using tiny public transport buses a lot - and petite people who may find the smallest handle height too tall still. It's a pretty big unit when in use (though folds relatively compactly).
I think it's just awesome that I can still have my 3y old face me and it pushes so easily (many pushchairs are designed to face out once the child is larger and aren't so well balanced for pushing with seat in either direction). I walk between 35 - 45 miles per week and this is my number one choice pushchair for everyday - copes well with all but the most extreme off road situations, carries a huge amount in the basket if needed (fab for picnic and toys - or in my case - older siblings school bags), baby can face you or face away - seat reclines to 4 different positions using the lever at the top of the seat (can be done with only one hand as opposed to the bugaboos tricky two handed push button recline system). Seat fabrics wipe clean easily. Breezy viewing panel included in hood (no need to buy expensive additional hood for summer or holidays abroad) - bugaboo doesn't even have a hood view panel at all - so you cannot see baby if facing away with hood up! Pull out 50SPF sun visor which tucks away when not in use has also saved us a fortune in sun creams! - Esp as our ds won't keep a sun hat on but will tolerate the visor panel - often popping it out himself now he's older if the sun is in his eyes. The footrest is adjustable - for maximum comfort for your child whether sitting or laying down.... I could go on - but well, you get the picture - it's near perfect!