St-e motor options

Hi guys,
Setting up a st-e and i've hit a wall on motor options....

Wanted to get a 3300kvV2 Medusa but they are out of stock. Email Medusa Research but have had no reply.
Neu is way out of my price range.

They seem to have the V1 in stock though.

My question is how does the V1 compare to the V2 and is the Great Planes Ammo 3300kv worth looking at?

I'll be running a Mamba max as the esc and 3s lipos.
Also when running the mamba max, would running a bec make much of a difference to the temps of the esc?

Any toughts or suggestions would be much appreciated.
Cheers