Ok, so I've borrowed my friends baby jogger to see if I like them before I buy one myself.
The answer to the question is: Nooooooooooooo!!
I ran up to my older sons school and back this morning with my youngest in the jogger. It was so hard to run with :(
My legs hurt, my arms hurt, my shoulders hurt, and I ran so slow! I couldn't even blame the wind today.
Conclusion: I don't think I'm buying a baby jogger anytime soon!