Tamarind has my vote.
I relocated to Sunnyvale from Chicago and have toured alot of places. Although I haven't made my decision yet I am leaning towards Tamarind Square. The staff was extremely helpful and patient with all of my questions and the apartments were very nice. Ive toured many places and the service definately stands out. Most places rushed me through the tour and did not make me feel like they would take care of me if I moved there. I've talked to a few of the people in the area and they gave positive feedback on the community and I can see myself living here too.