Hi vegas
spreadbetting forex is advantageous over trading with a retail forex broker, or trading forex futures - in the sense that profits are free from capital gains tax.
Specialist retail forex brokers are naturally likely to offer a specialised and more advanced forex trading service. This may include more/more advanced order types, full auto dealing with no dealer intervention, instant executions, no slippage, no requotes etc.
Both spreadbet and retail forex brokers are marketmakers (they make their own market) and profit from a clients losses. Some may call this a conflict of interests.
CME Globex forex futures on the other hand are a regulated, transparent exchange based market.
Cheers
jtrader.