With our first we got a swallow one from babyco. For a very cheap pusher it did the job. The only problem we got there was that the back wheels became a bit loose (not fall off loose, just wobbly) leading to the pusher wanting to always go one direction which became a bit annoying!
When the second came we got a phil and teds vibe. No problems yet! If you have any plans at all for a second, I would really consider a phil and teds. The have some good deals available on the sports model at the moment. But dont try second hand - they seem to sell for lots (ive actually seem some sell more than the cheaper stores do them brand new!). The only reason we went the vibe over the sports is that we do lots of walking, and the vibe has a little more room to stride out (if you are tall a good thing!).