City Select vs Peg Perego Duette

Ok looking for feedback on whether I should forgo my desire to find a used City Select for my twin dd's that are due in June and go with a used 2011 model in great condition Peg Perego Duette selling for $350.00. Now if I go with the Duette I realize I will have to try to find reliable trust worthy Peg Perego used car seats from a close friend or another MOMs, since my Graco Snugrides won't work on the Peg Perego Duette. Anyway look forward to your feedback.

Thanks,
Karla