Only a little bit further on than you, but... we were thinking along similar lines. We do want a pram system, for various reasons. We also wanted a pushchair that was parent-facing, not just the pram bit.
We whittled it down to a choice of two, eventually. We spent ages looking at the Freeway Linear in John Lewis. It seems sturdy enough, but we could not figure out how to fold it or exchange the carrycot for the carseat, etc. We asked to be shown, and the assistant took forever - she obviously knew what she was doing, but the mechanism was so stiff that in the end she had to show DH and he did it. That didn't fill me with confidence. It seemed a bit clunky to us. Also, it really doesn't fold down very small at all. Having said that, when we left John Lewis to go and see the other shortlisted system, we hadn't ruled it out, we just had a couple of reservations.
We ended up going for the Mamas & Papas Ziko Herbie. It was so obvious how to fold it, add the bits, etc, that we didn't need to ask to be shown how to do it. I could do it no problem. We dumped my 4kg bag (don't ask - I had textbooks from teaching in there) into the various carseats, carrycots, etc and I could still lift them off easily by myself. The chassis folds into a relatively small space (bearing in mind it is still a travel system!) and is freestanding - this was a major plus, as we can leave it by the front door, whereas a non-freestanding one would have to be put in a cupboard. Also, the Herbie uses the same pram body to convert into the pushchair body, you just add linings and a harness (all seemed straightforward, secured with poppers). This means that you don't then have the carrycot sitting around the house. The Herbie carrycot can also be used as a travelcot, with a Moses basket stand.
I'd say that there isn't much to choose between the Silver Cross Freeway and the M&P Herbie - so if you haven't had a look at the Herbie, it might be worth doing so. They're similar prices - both at full price and the best current offers. I think the more prams/pushchairs you actually get to see and touch, the more you realise what you do and don't want. It was only by looking at loads of others that we worked out what we definitely didn't want.
Of course, we haven't actually used it yet, so that may be a whole different story!