There's a fun, comprehensive table. Ava Financial Ltd: variable spread 0 to 0, no commish. That business model sounds about right. Couldn't possibly be Profinum (RIP), rising from the ashes? Actually, both Profinum and Ava FX were / are based in the hotbed of high finance that is Road Town, Tortola, BVI... pure coincidence, I'm sure.
And if perchance 0 spreads don't make your broker choice a no-brainer, wait till you see their USP:
"Ava FX provides a new breed of service to the retail online trader. Unlike most FX companies, which were founded by bankers, Ava's founders come from the marketing side of the online retail FX world."
With MB trading you can trade any size you like. Even 100 lots. Get there demo and in the order box just type: .01 for 100 lots, .1 for 1000 lots, and 1 for 10k lots.