My PL HP is going on 2 years. Upgraded from a Prologue 2 which I enjoyed for several years. It didn't have a remote, so that was a big factor upgrading to the HP.
Sonic wise, the HP just delivers what all the reviews state.
Geat sound is subjective, I compare what my system sounds like to the uber systems I like, at shows/stores. IMO, the HP
with the appropriate $$ level source/speakers AND room setup, approaches the REALLY nice systems for considerably less.
Speakers used-Opera Seconda floorstander(sealed) & REL B3 sub. Nordost plumbed from wall-power plant-speakers.
The model I use is several years old and has been revised a couple of times. If I get the itch in a couple of years, I will splurge 5K+on some used Sonus Faber speakers and 2 subs.
I dont feel the need to go separates-linestage/amps. Although, If I started from scratch, with a few more bucks,I would get the HP monoblocs/pre, just because.