I got guild wars originally when it first came out. I leveled my guy to 20, it was the max level then - not sure what it is now.
Guild wars looked visually beautiful, but it had it's faults. You had to follow certain pathways and couldn't jump off track. Outside the cities it wasn't a real MMO. You couldn't meet other players, only the one in your party.
The quests seemed repetitive, but then again, so did all MMO's. The bosses all seemed similar, with some electric shit surrounding them.
I haven't played it in a year.. Not sure if they have improved it, I know they brought out some expansions.
Still, it has no monthly charges, so for the price of the game - it's a good deal and can be fun to play.
I prefer WoW, but to each his own.