well problem is that while fx 500 is fine its DAMN slow, so if you plan to do anything thats more intensive than just BASIC stuff with not much textures etc etc id go for the fx 1100.
Sine youd probably be more satisfied usinga a consumer over the qfx 500, even with gliches. So youll get less performance for more money.
Alias only says they are bug free, not talking about performance, now a a fx 1100 is pretty fast, nothing spectacular tough.
Usualy in my experience the more novice you are the more strain on your graphics card you put, since you are less optimal in geometry use.