seats in C in 2-classes aircraft
 

I will be flying zrh-dar es salaam in C in december and wanted to pick seats. It's a A330 2-classes aircraft. Seems like the best part of the plane is the first 4 rows (where F is on 3-classes aircrafts). I picked 7A and B (first row), but now I'm wondering if 10A and B might be better. Sometimes the bulkhead seats have less legroom than the other rows (like the first C row in the MD-11). What is your suggestion ? thanks in advance.