I was given Guild Wars for my birthday a few months ago. The lure of free monthly online play made it an ideal gift for me since I could play it at my leisure without worrying about wasting money. It turns out that some of my LAN party friends are also playing Guild Wars and I joined their in game guild for the times during the week I play. I’m also still playing World of Warcraft.
I think Guild Wars is the weaker of the two games when it comes to interface, design, and quality of code and content. But, it simply comes down to playing with a group. I’ll play either game based on who I can get a group with more than how much I enjoy the game.