I've played and finished both PoP:2 and PoP:3. I haven't played the first game, sadly... PoP:2 Was friggin awesome, wholly because of the solitary feeling you get from playing it, but also because of the always impending appearances of the Dahaka (which by the way is one of the coolest video game villains i've ever seen). PoP:3 Was also friggin awesome, but mostly because of the varied playstyles between the Light and Dark prince. I didn't quite get into the whole "i r need to save0r teh w0rld0r" kind of feeling, and bringin back the Vizier was kinda... "no", just "no". Overall, i'd say they both rank the same, Warrior Within because of the utter awesomeness of the Dahaka coupled up with the solitary gameplay (reminds a bit of Shadows of the Colossus with the exception that SotC didn't have "normal" enemies) and Two Thrones because the Dark Prince was so gruesome and condescending all the time (contrasts the whole "I R NEED SAVE0R CITY0R NOW0R" attitude of the Light prince) in addition to the Dark Prince being completely overpowered and EZmode when compared to his Light counterpart.
PC PoP is a LOT better than PoP on telephone. I finished all 3 parts. 1st part I liked the story and it was like a tale. 2nd part I liked the new darker game with great music. 3. part I liked... well I don't know everything but it's a bit short though.
Prince of Persia a.k.a. Prince of Parkour! have you guys played the REALLY OLD version? circa Windows 95?
I like the one on GameCube and the third Console one. The first one was amazing fun with the acrobatic puzzles.
ive only played warrior within. it's pretty sweet. I have SotC, I only got about halfway before i got bored and quit.