They're all pretty decent. Gokyuzu is probably my current favourite but it's always too busy to bother going. Selale and Antpellier probably after that although Hala is also good.
The only one I'd really steer clear of is Londoner which is perpetually empty.
Recommendation for a Turkish on Green Lanes? Nothing fancy, but something reliable! I thought Devran was pretty good. Cheers!