It's similar to the Pure Strike 18x20 IMO, except with a bigger, more forgiving sweetspot. For me, it was just a bit odd....low flex but weirdly thick feeling beam made it play stiffer than its RA alone would indicate. comfort isn't problematic but definitely not plush. swings a bit easier than the pure strike with similar stability. more power than something like blade 18x20 or yonex hd; along with the pure strike, probably one of the more powerful 18x20s while still offering good control. it was a good to great racquet to demo and checked most of my boxes (no arm issues, stable but not sluggish, natural to swing, could feel where ball landed on strings, right power/control level), but i just didn't vibe with it as naturally as some other racquets...the beam thickness and 100sq in. head size just made it a little awkward for me. it was a jack of all trades, master of none situation.
and to answer OP's subjective question, pure strike 18x20 3rd gen is pretty great for 1st serve, being one of the more powerful 18x20s. and i can still generate a lot of slice with it on my second serves to get a curve. kick serve can't comment on since i don't have a decent kick :'(
