I found SENcapitals after hearing about them at a conference and the initial impression was positive. But for about five months later, I have encountered so many issues that I cannot recommend them. Trades failing, charts not loading, and support tickets going unanswered for days at a time.
Pros: Great customer service|API access|Two-factor authentication|Full transparency
Cons: No integrated tax optimization|Withdrawal takes 1-2 business days