Hi Vince,
I have been with MBTrading the last six months and have no complaints at all. The customer service has been top notch and the fills are fast and good.
Initially I was using eSignal for charting, but have since moved to Medved Quote tracker which is free and which I actually like better for most things. The real time data comes into Quote Tracker from MBTrading, and you can subscribe to a service for about $20 a month for historical backfill.
Jerry Medved of Quote Tracker like Steve at MB, monitors this forum and has been super helpful whenever I have need a question answered.
Good, dedicated folks at both places so I would not hesitate at all to recommend that set up at all.
Hope it helps,
Enzo