Just got thru with my weekend demo of these racquets and here it is. First off, I am a 4.0/4.5 player baseline 80% S/V 20% player with two handed backhand and big kick second serve. I have played with a HPS 6.1 Stretch for the past two years. Wanted something with higher/larger sweetspot. Let's start with the Tour 90. I did not like it at all. However, the strings in the racquet were in poor shape, which may have been part of the problem. I will not go into details, just not right for me. Seemed cheep and made of outdated construction tech. LM Radical OS: If Andre really uses this racquet I see why he uses Luxilon strings. With the Wilson NXT strings that came in the racquet it had way too much power. I had trouble keeping it off the fence. Tried it with 6 grams lead at each 2 and 10 o’clock and 4 grams at 5 and 7 o’clock (where the silver LM material is) for a total of 20 grams. Still too much power for me. LM Radical MP: Just started with the same lead weighting as I used with the OS version. Much better. Nice feel and touch. Good for serve and volley as well as baseline. A little stiff feeling but good racket. I would say good racquet for 3.5-4.5 player with 3.5 playing as it comes factory weighted. LM Prestige Mid: Started with the same lead weighting used on two other racquets. Even better than Radical MP. Not as stiff. Very good on ground strokes and nice serving racquet. I really liked this feel. Very smooth racquet, but small head left very little room for error. I am sure that after a few matches would be no issues except with some net shoots with little time to react. LM Prestige MP: Same lead weighting used on other racquets. Now this is a racquet. I was blown away at this racquet. I did try this one initially without lead, did not like it like that. Too head light, made it feel and play like -11oz granny stick. After weighting it I found the ground strokes were outstanding in feel, power, and control. The vollies were crisp and good pace. Drop volleys were very controlled and lots of feel. Did not try too many drop shots, but I am sure they would have good feel. I was worried about serving power at first with the flex of this stick. First 3-4 serves felt very poor. However, I ended up playing 1 set of singles and 2 sets of doubles with it and after first game they were much better. If I used a full service motion they were very powerful with lots of control and kick on second serve. S/V was very good and when I had to hit half volley at service line it had good control. As you can see this was the most impressive racquet I demoed. I liked all of them except the tour 90 and the Radical OS (although I could see the Radical OS as a good racket for a 3.5 doubles player who wants a little more pop). I will be ordering the LM Prestige MP this afternoon.