Spot FX - interbank market
FX Futs - Futures exchange (FE)
Spot FX - "flow" info available to the major players - Citi, UBS, etc
FX Futs - FE provides volume and time&sales data.
Spot FX - "Dealable" quotes only
(I love that term)
FX Futs - FE provides real-time quotes, avaliable from a number of vendors.
Spot FX - unless you have major cashola and can open like a half-mil+ account with Citi or UBS
(respectable bucketshops) you have to open an account with one of the other
players (bog standard bucketshops, in which case you'll also need to provide your own lubricant)
FX Futs - Standard Futures account rules
Spot FX - many pairs
FX Futs - limited contracts and pairs
Spot FX - not aware of liquidity issues - unless you are Soros or Buffett
FX Futs - liquidity could be a problem for some contracts depending on trading style/system.
Spot FX - touted as commission free, when you calculate the cash on the pip spread made by the bucketshop on each trade, you are realise that you are being given a right royal shafting
FX Futs - A few bucks per contract - depends on broker
Both - If you believe any stops are guaranteed then you are dreaming.
Spot FX - What is regulation? "Sorry Sir, your order was filled during a period when we did not have dealable quotes, therefore your order was not really filled (even though we said it was), and neither is your
paper profit."
FX Futs -
CFTC - although busted trades do happen especially when wealthy fat-finger F***s up.!