Best PCP Rifle?

I love my huben k1. I wouldnt call it reliable, and there are many that are more accurate.

I dont know of any that are more powerful AND semi automatic though. Considering I get about 80-85% of the muzzle energy of a "real" .22 rifle (over 80 FPE. 37 grain going 1000 FPS), with only about 15% of the chamber pressure of a real .22, it's a very impressive pcp gun to me. 
 
I have an .22 FX Royale 400 that has hammered a gazillion squirrels (bought back in 2017). Then, I picked up a Daystate Wolverine HP R in .25 cal about a month ago. I thoroughly enjoy both guns, but if I could only have one, I do believe it would be the Wolverine - because I get more FPE from it, even though I get less shots on a full tank.

The .22 Royale, shooting H & N Sport Baracuda Match, 21.39 gr pellets, delivers 32.64 ft-lbs of energy at the muzzle.

The .25 Wolverine, shooting H & N Baracuda Hunter Extreme, 28.24 gr pellets, delivers 47.86 ft-lbs of energy at the muzzle.

I also have a .22 Wolverine, not HP, and shooting the same H & N Sport Baracuda Match, 21.39 gr pellets as the Royale, it only delivers 29.17 ft-lbs of energy at the muzzle.

All three are more accurate than I can shoot. If I bench rest them, and bear down and take my time, they'll stack pellets.