Ugh, I feel you. I remember that search. And I felt the same way about the Phil & Ted, as well as that one that the older kid can stand on the back...can't remember what brand. If the older kid is sitting instead of standing, he'd have to lean forward to fit correctly.
The hardest thing for me was to find something that I could put the infant seat in, and still have good room for Sam. We finally ended up getting a side-by-side by Combi. It's narrow enough to fit through doorways, and it maneuvers pretty well, considering. Plus, the Graco infant seat fit in there pretty well (even though it's not designed to fit), with plenty of room for Sam in the next seat. The only thing we had to do is if we were going to be on an uneven surface, we used a luggage strap to strap the infant seat in, to make sure it didn't slip. But on regular smooth surfaces, it was fine.
Now that I read it, it sounds so trashy, with the luggage strap! But it worked for us, because it met all of our qualifications otherwise, and we didn't have to use the strap very often.