GMAT Strategy

ok so I have lots of stuff downloaded from the net obviously all are not to be folllowed.Among them i have this Gmat+ book and lots of paper based tests..different sets different years.Since obviously I'm not going to follow both,i wanted to do it so I can get a lttle practise the "fun" way(I am so tired of seeing the covers of Gmat books)and also it will be a great way to build up stamina.
The answers of gmat+ book are not said to be accurate.Obviously all the questions will be searched and posted here if trouble arises.
So the final ques.:Which do u think is a better bet??Gmat+ or PBT"S??