Do not use IIA Plus (iia-plus.com) for anything serious. I used them for a couple of months now for small trades and it was okay. When I deposited a larger amount and traded more, my account was flagged, my withdrawals were delayed, and I was asked to explain my trading. They treat active traders like criminals.
Pros: Low minimum deposit|Dedicated account manager|Transparent fees
Cons: Spreads widen during volatile periods