It would be my favorite of the big 4 MGS games except for the fact that the bosses are all horrible except the final one, which is pretty great. MGS3 beats it out because of having the best bosses in the series, and Big Boss > Solid Snake. I might buy MGS:PW HD edition because the new metal gear game - Metal Gear Solid: Ground Zeroes is a direct sequel to MGS:PW, and MGS:GZ is going to be a prequel to the next one, which will be MGS5.
Other than that, I'm pretty much gameless until Wii U.
“Anna, my strong, terrifying Anna.” -Cas
"You lack the requisite spine and testicular fortitude to study under me" -Elodin