I loved Sampras too. Just the way he played and moved around the court still amazes me. He would be at the baseline one minute and at the net in the next, and you almost wouldn't even see him transition. Just an amazing player to watch. I loved his personality too; unassuming, yet totally confident. An amazing man.
Andy is such a tactician, a magician if you will. He's so good at what he does that many people miss the nuances of his game. He plays tennis like an analyst, like someone who understands the game on a very base level. It's like he knows what to do in a given moment.
I prefer watching Andy play the other Big 3, because that's when you can really enjoy his game. I love his personality and humor too. He seems like a genuinely nice person.
So, for me it's the way the play the game, and the way they talk about the game they play.
I like the game first too and personality comes second to me but I can't warm up to a player who I find a bit too self-centered I suppose. But mind you, I am not judging Federer based on who he truly is because all I know, he could be a wonderful person in real life. I am only taking what I see on court and in the presser. But my dislike of him is nothing intense by any means. There were lots of times when I ended up rooting for him and even felt for him on occasions. I do believe he's a great player despite negative H2H vs Nadal. He's done a lot to get overshadowed by just one H2h.
And yes, it's always lovely to watch Andy vs the top 3 as he tends to bring his best if he could against them, but there are also a handful players I like to see him against as they too bring out the best in Andy.
Sampras was a very unique player IMO because he had one too many signature shots to be quite unique. I don't think we'll see him anything like him again.
And thanks for being lovely about my players. I am glad you enjoy them too. 
It was odd to hear Pete's game described as boring as it was the most beautiful thing I'd ever seen on court. Sampras moved like a panther. I was always stunned at how he got to the ball without any effort. He never looked rushed and he always looked determined.
Did I tell you that I went to see him in person? It was the year that Canas was on fire. He had just beat Federer twice in a row and it appeared he was too hot to handle. Pete was in the midst of his slump, so nobody expected much. I was ten minutes late getting to the stadium and had to wait for them to take a break.
While I was waiting I was yelling and cheering my fool head off. My son was so embarrassed, but I explained to him that you don't get many instances where it's OK to scream in public, but when you do, you should take advantage, which I did.
This lady told me that ever since I had came and started cheering loudly for Pete, he had picked up his game (taking a bow).
Anyway, the parking lot was so full and the atmosphere was electric. Pete started winning and I went to the restroom. People were so excited. This lady was telling me, "Oh my Pete is doing so well, I am so happy for him." She kept rambling on and then she stopped and said, "You are voting for Pete, aren't you?" To which I replied, "naturally."
Pete was my guy without a doubt.
And Andy, I've always liked him. He just seems like such a nice guy. I love his sense of humor too, and I enjoy watching him dissect a match. He's so fast and effortless that I think some people actually miss what he's doing. I had been waiting for him to win a major for so long, but I never lost hope. I knew he would do it and I'm delighted about it.
Federer? I recognize him as a great player despite the H2H, but I do sense too much vanity. I don't care for vanity. And I never liked the way he talked about his opponents in the press. Never could warm up to him, but still, I wish him well.
Hating strangers is just dumb.