Annoying..
* How the rules for certain markets are often very unclear and can be interpreted to mean different things
* Inconsistency with suspensions/turning markets "in-play"
* No chance of being able to speak to someone who knows what they are doing at Customer Support unless you are willing to wait for 235235 hours
Likes:
* Better prices (obv)
* The software automatically calculating your overall "position" in a market and also the "what if" function is a very good feature
* Detailed profit and loss figures that you can seperate into time periods/seperate sports (I don't understand why on Betfair you can only look back 6 months, you should be able to see everything you have ever done since you became a member)
* The "my markets" feature
