Flysky, Lemon, Orange, they’re all good. It comes down to which can you easily get. I’d look locally first, if none are available, then go online and find the best deal you can. Shipping is going to be a factor.
Lemon have been great on all 3 planes I tried them on, reliable DSMX or DSM2 binding, light weight, great range. I used the smallest 9g ones that are under $15 shipped.
That's what great about the t12. You can buy the cheapest ones you can find. I ordered one of these. Good reviews and cheap. I did want 6 channels so I could do mixxing