I've been following ajaxmoor's picks since last month and I can say that he hands out winners most of the time. Go bookmark his
thread if you want to follow his picks.
I avoid buying picks because it's not worth if you have a small bankroll long term profit will be reduced.
2/ W/L is important but has to be put in consideration with the gross number of tips. If I'm not mistaken, ajax also has a very good ratio but doesn't post much tips. So it means a small number of bets for you in the end.
Don't forget the profit record. Other tipsters could have a huge amount of losses than wins but still manage to be in profit. It depends on how they manage their units on each bet they make.