Lots of online bookmakers around at the moment and new ones coming on the market all the time. However, I prefer to stick with what I know and one of my old favourites is William Hill. The odds are usually good, but best of all is the payouts are fast and the service is good. More details on their official website at WilliamHill.com.
Many people like to slag off William Hill but I don't agree, they have always been straight with me and I suspect that anyone who says otherwise has a grudge probably because they lost! I actually am in profit at William Hill and one of the main reasons why is that they are big enough to accept large stakes whenever I want to bet big.
Now I said I am in profit and I'm please with that but there are those who have made much more at Hills. For example, I have never been as luck as this guy yet...
But for those who aren't lucky enough to win the jackpot, the William Hill free bet [more info at http://www.free-bet-advice.com/william-hill-free-bet] is at least a good way to get started with £25 free matched bet.
So while Betfair may offer better odds, if you're a high roller on sports you should stick with the big name bookies and of those, Hills are certainly ahead of the game in my opinion (although bet365 are not far behind).