Combi 6610 - Feedback, & How sturdy is the "Perfect Match System"?

My husband & I are beginning our quest for a stroller & carseat. The Combi 6610 appeals to me b/c it's lighter-weight than a "travel system" for schlepping in & out of the car. But, I'm wondering how sturdy & safe it is when attaching an infant seat. Also, how well do the Combi strollers hold-up for suburban use, ie. daily dog & baby walks? What's the least expensive website/store you've found to purchase one? I'm eager to hear about others' experiences & recommendations! Thanks! -Michelle