I nearly bought the Quinny Buzz, I am still secretly hampering after one, but after talking to my sister (who works in a baby shop that sells them) she has that many problems with the Buzz that she managed to some how talk me out of it.
I eventually went for the Micralite, it isn't to everyones taste, but, you can get the carrycot which is lovely, in fact it is my babys favourite place to sleep! The maxi-cosi cabrio, and cabrio-fix (which when brought with the easi-fix base is Iso-fix) baby seats fit the micralite frame, and both the car seats I believe have done extremely well in crash tests. Most of the rain covers are included with it, all you need is a foot muff (some shops have offers with this included in the price) and a changing bag.
For practicality, the buggy is great round town and in the country, it is so light you do have to be careful about loading it with bags on the handle bars, but you can get a fair amount on, and the shopping basket on the bottom is pretty useless, even if it was big enough, you just can't get things in and out of it, the buggy folds very easily but it is quite long, we recently got a new car and when we were looking at what car to choose we tried it in a few different boots, it wouldn't fit in an Astra, but if you have a wide car boot once it is in it takes up minimal space. Once the baby is too big for the carrycot, it turns into an exceptionally lightweight stroller, it is really easy to move and turn one handed, and it is quite compact.
I am really pleased with it, and even more pleased that we won't have to change it when DS2 is out of the carry cot. It does everything we need it to.
Off the top of my head, when we bought it the best places to look price wise for most buggys were here , here or here but be careful with the last one, they have something of a reputation when it comes to delivery times and refunds, if you live anywhere near Bedford where they are based it is probably better to go in and see them and take your buggy home that day.
Sorry for the essay! Hope it helps