I have the linear freeway and I do like it, but if I was choosing now I might go for something different - I quite like the look of the i-candy range.
I like the fact that LO can face me or away from me, and I really like that the pram body lies flat, and is so easy to adjust between lying flat and sitting up. I think a lot of lie-flat buggies have a carry cot and separate buggy seat part, and I like that this is just one piece. We have done a fair bit of off-road walking with it, and although it's not designed for it so not brilliant, it has coped. The seat is quite high up which is good for Lo to look around - we took it to a farm last week and were glad we had as LO could peer over the fences into the pens, which he couldn't have done in the stroller.
It does take up the entire boot of my car though, and is a bit of a performance to put up and down. To put it into the car, I have to lie the pram body flat, then take it off and put it on the floor, then collpase the frame and put that in the car, then lie the pram body on top. I'm used to this now, but my one-hand fold stroller is so much easier! Like you say, it is quite bulky so probably not the best for public transport. Do you have space to store it at home? It's not very compact when collapsed, so it's just as easy to keep it up in the house - we don't really have room so it tends to live in the car boot or the garage. And it's not the easiest thing toi steer in small spaces, I'm forever bashing shelves and displays in shops - but that might just be me!
I'm not trying to put you off, just telling you the things I wish were different about it really, but they might not bother you! And it does have its good points.
But do have a play in the shops - it's good fun apart from anything else!