I don't think their platform is user scalp friendly like NT or even the best imo T4. They like you said "seem like a good firm". Thinking from a business perspective, one might need a contractual agreement to supply clients with different platform like amp futures for example.
I will look at SMB again but my gripe is 50% payout does not work well with me unless you are withholding my taxes also benefits like fee massage and gym like those wall street traders not to mention health insurance benefits too.
I like TT as you can see the volumes trading at price quite easily. I use basic limit orders and stop orders, and it works fine. It's the fastest dom I believe. I like T4 as well, as well as NT. I actually love sierracharts dom, only you can't click in and out very fast, its only issue. If you are rapid clicking it kind of sticks.
50% payout at smb is not great, but they do like to get you up to big size from what I understand, and of course there is nothing stopping you from having your own side account as well. And ya, at SMB you are an employee, not a contractor, so there would be different tax scheme as well.
. Going to bed now.