Probably my .22 LGV or possibly my .177 FWB Sport. Hard to go wrong with either. The LGV is newer so I've been playing with that more so I'll go with that one.
I have four total PCP rifles and the two in which I cannot currently decide in which I have the most pleasure and pride of ownership are the FX Crown MKII and a Daystate Air Wolf MCT.
P35 in 22 caliber. I have and like the same gun in 177 and 25 but the 22 is the most accurate so it's the favorite. 177 shot pretty well today, however, but needs to do better to unseat the 22. It does have the advantage of almost twice as many shots per fill.