Most digital effects sound a little "over processed" to my ears, if you catch my drift. I never used any line 6 products but I had a Fender Mustang and it killed the tone if I used too much of most effects. I would figure out the effects you like and buy the genuine versions.
Just remember, things cost more for a reason, and if it sounds too good to be true, it probably is.
But ultimately it's your call.