i left CyberTrader and i really miss it. the charts were kinda funky, but the platform was user freindly and fills seemed solid - maybe IB is faster, cant say. on-line customer service was excellent. the data didnt seem to lag & the learning curve to get trading was pretty easy.
IB has its issues, but its probably the best choice.
RML allows 5 routing choices
NITE
TRIM
MNGD (Penson MM)
ARCA
INET
i think with ARCA & INET you pay fees & get rebated. I so even if you get the lowest commish, you still pay more when you take liquidity. also, i dont think they have a smart routing option. think TRIM & NITE are MMs - if so, then 3 of 5 routing choices are to MMs.
Scottrade's data seems to really lag and the fills are laughable "order QUEUED or whatever", but probably pretty good for position trading. i use it as a back-up account.
i opened an account with MasterTrader, but the charts had limited potential - the guys were cool to deal with, but i didnt like teh feel of the set-up. probably just me.
TerraNova's fees were too high for me.
so bottom-line, i'd go back to CT even if they charged a monthly fee.