Jeeez, give the kid a break.....This thread isn't about whether he's a 5.5, 4.5, 10.5, or 95.5. Who cares what rating he is? Let's just assume that he's an up and coming talented junior and lets stay on topic because this thread's going nowhere otherwise and he's asked a legitimate question about racquets. (That said, I don't think there are many 14 years olds who are true competition level 5.5s given that you'd be playing against adults. I'm not even sure Gage Brymer was at that level at 14 y/o)
Anyway, getting back to the original question...
I've played with practically all of those racquets on the original list (the racquets I've used for the last 4 years as my primary sticks were the K6.1s and then the BLX 6.1s). I'm going to stick my neck out and say that the best racquet in the entire Wilson range for someone who's a good competitive level player but who isn't at the pro level is the
BLX Juice Pro. I love the 6.1s as well but its a racquet that makes you work that much harder to achieve the same result, whereas the JP is more forgiving and gives you an easier ride when you're less than 100% or when you're put in a stress situation during a match.
I recently switched to the JP from 4 years worth of 6.1s (and a brief 3-4 month dabble with the YT Prestige MP) and I think its just a
fantastic stick, particularly off the ground. One of the best new racquets Wilson have brought out in ages IMO. It's just a shame that because of the lairy paint job it doesn't attract more buyers. Be aware that as with all things Wilson, there are noticeable weight variances from factory, so if you're thinking about buying get your sticks specced by TW.
JP review thread:
http://tt.tennis-warehouse.com/showthread.php?t=423172&page=3