On the Intitutional Side the spreads are much tighter, choice to 3 in just about all the majors. The retail platform does not have as many banks on the platform, whilest more banks are coming on board to give a tighter spread.
At Hotspot FX you can deal for free if you a passive trader, meaning place bids/offers. It is $3 per 100,000 dealt if you an aggressive trader. Keep in mind that Hotspot is a true ECN meaning no trading desk, so there aren't guys on the other side bucketing or trading against your funds...
Just to give you all a heads up. Hotspot FX is close to having additional liquidity providers on the platform. Probably will have some of the tightest spreads in the industry as well as the cleanest business model.