If you are considering a 2 part/wrap, we use the Flip nappies (made by bumGenius). We changed to cloth after DS had weaned (not deliberately, that was just when we approached it properly) and the Flip system have been great for us. We use the Stay Dry insert during the day and Organic Night insert at night, DS sleeps 12h and rolls around all night but no leaks! Some of the pros of Flips are that they dry very quickly (I usually wash late at night, put on airer before bed around midnight, wraps and stay dry are dry by morning, organics by midday, in a cool room with no heating or dehumidifier. With the window open, they dry quicker). They also adjust for 3 sizes lengthwise and can accommodate a huge range of waist sizes as they are birth to potty (I think the same can be said for a lot of reusables). We have them in poppers as I don't like velcro/aplix and they're still easy to fasten.
Our area gives a £54 voucher for cloth nappies, so as another pp said it's good to find out what your council does.
A lot of people I know use flushable liners, and I was convinced that I needed them in order to manage with reusables, but I actually much prefer washable fleece liners. They stay in place and catch all the poo, whereas the flushables don't for us and so end up being a bit useless. It also works out cheaper.
Related to this, we use a SmartPail and Smartipants wet bag and much prefer them to a regular bucket and the drawstring wet bags.
Although I haven't done this so far, a key thing to remember is you can mix brands and nappy types according to your needs, so there's no need to spend £250+ on a complete system from one brand. We spent about £120 initially, really got on with the Flips and so then added to the stash. It cost about £200 in total, but we spent about £150 as we had the council voucher.
There may also be nappuccinos in your area where you can see all the different types of reusable, ask questions and get info about nappy libraries and your local council schemes/offers. We have a nappy library here where you get 15 different nappies to try for a month for £15.