Ok, this is a tough one. Who do you consider the best ever? Well, all the best sucked at atleast at one(grass or clay). Borg was all grass, Sampras and Lendl could never win on clay and neither can Federer it seems. Then there are notables such as Muster, Courier, The Chilean guy whose name escapes me, oh yeah, Marcelo Rios. Mc and Conners are notables but we are talking the best ever, so, That leaves me with either what I have heard about(Laver) or What I've seen(Federer). I have to say, for me Lendl, Sampras and Federer have been the most complete and the most enjoyable players I have ever watched. But I dare say I would consider Sampras as the best. Agassi was the only one to win all 4 slams so he definitely is a candidate for the best. My all time favourite is Edberg with archrival Becker a close second but they never won the french. Hmmmmmm. As much as I disliked him all along, Sampras is in my opinion the best.