Thanks to Dave1011 for letting me string his demos for him, err letting me test them I got F3 F5 (used P68) and P7 P8 (E66) all strung to 25lb. This was a little soft for the P68 which i use at 28, but about right for the E66. Quick note on the E66, its smooth/slippery as heck, great for power, but doesnt seem to lack control. POwer could be down to the head heavy frames used to test it, but one to try again! So I've parted with my Kalkuls. Nice as they were, they were just too head light. The A5 is on long term loan to a clubmate so it can't stray too far just in case. I enjoyed LN1, 68tx and BG80 but P68 really didn't work for me. My theory is that the right racquet for me works with ANY string setup. The nail in the coffin was that the Spieler is roughtly 1/3 the price and I find it equally nice to use. These are also borderline too head light/light overall but the heaviest one, with thick string, pretty much perfect. So my current goto is a 92g wet Spieler A09.1 with P68@28lb. I may be after like 1g of the weight moved up top, balance that with mid/thin string perhaps, and that should be ideal. So, testing the demos. really not enough time with just 2 sessions, but some brief notes: F3 - was strung too soft initially. Pretty much a stiffer spieler (sword frame). I like the flex of the spieler, and timing was off with the F5. Pass. F5 - same flex as spieler. tad more head weight then the A09.1/F3 (ideal!). Still really fast, and quite stable hoop. 1st sessions i saw some nice power from it, enough to buy one for myself. The pick of the bunch for me. 2nd session, timing was off. P7 - a bit cumbersome. not as soft as the F5/A09.1. probably not as stiff as F3. Very stable, potentially big power, but just too head heavy for me. The stability + slightly too soft shaft for the headweight prompted me to jump straight to P8. It's probably awesome for singles but too sluggish for me for doubles. P8. Way off spec for me, in terms of stiffness and headweight. I've used BS10 in the past but getting older and preferring more flex now. So this one really surprised me. It made crazy power out of nothing. Slightest touch from mid court caused a push to become a drive. Control excellent as it is rock solid. Surprisingly fast too, on a par with my fast frame 4u, which doesnt seem possible. Its got a kind of fat sword frame. Not a sword with rounded off edges, but a round frame with sharp edges. The shaft is real stiff and i think this is what helped it feel so responsive. Sadly, i was getting elbow pain after a few games - sore muscles rather than golfers elbow or anyhting more serious. If i can build up a bit more strength i would definitely consider upgrading to a P8 in the future. Even at 5x the price of a Spieler. So its top tier pricing, which is a shame, but a relief to my wallet. Apologies for the brief reviews. When i've restrung and adjusted to the F5 I will post more on that. As for the Uberschall stringing. I used to do haribito so the current uberchall pattern of round the world on the crosses wasnt much of an issue, had to keep referring back to the pattern though as its not quite the same as i used to use.