3 of 3 people found this helpful
I was tempted to answer somewhat facietiously:
use brain !
Seriously, you need to frame your question a bit better.
This has all been said before on E14 and other places:
So, tell us who you are, where you are , what you are doing, what you want the FPGA to do, what you have considered so far.
And right now we have a worldwide shortage of semicionductors so an important part of your choice will be what parts can you get in your timescales for prototoyping and production.