I have gone for the Jane as well - it is a 3 wheel model as I want one that will off road (it is not the slalom pro - a slightly newer lighter 3 wheel the name of which escapes me!). I decided against the lie flat car seat as won't be doing any long journeys (and found it heavy) and went for a light weight carry cot attachment which packs down completely flat instead with their normal infant car seat.
Loads of people have recommended Jane prams to me - they are rugged and hardwearing. We met a lady who had a 9 year old one (on 4th child) and it still looked new! Also had a friend with relatives in Scotland which is several hours drive from where we are and the lie flat car seat was apparently fantastic.
Mine due to arrive any day - I found it very manouvarable and lightweight but rugged when I went to try it out.