How?
+1 on the uppa baby. Besides all the advantages the main on is:
Big basket sounds stupid but ask anyone that has kids and they will tell you the advantages!
Search DDF and ye' shall find
The big basket which holds ~8x what a Bug holds and is more accessible is up there. The "pushibility" of the UB is way easier than the bug, especially on bumpy surfaces. The UB wheels never have to be pumped with air. The seat on the UB is incredible and will protect your child from rain and the elements if needed. UB CS is a dream, Bug CS is a nightmare.
I can go on, but don't get me wrong, when I had the Bug and didn't have the UB yet I thought it was the best thing since sliced bread.