Im considering purchasing a Line 6 X3 Pro. I have used one and it seems to give prety good results.

I hear a lot of people saying its limited though. Is it true that if i want the x3 live to pass my signal through two tube screamer filters, it wont, it will only allow one of each effect?

Can you please let me know of any other shortcommings of the Line 6 X3 Pro, and what alternatives there are in the same price range?