Re: are the line 6 packs worth it?
Prices aren't bad and if I'm not mistaken I think you can get a refund within 30 days if you don't like them ? Or at least you used to be able to when I had a toneport.
That said, I really didn't find the ones I tried to be all that useful simply because while they are new models and what have you, its still all coming from the same unit and its still got the overall line6 vibe for good or bad.
So if a POD XT has 5, 50 or even 500 models and effects really doesn't matter because I just didn't see them as making that huge of difference or getting me things I couldn't with tweaking other patches.
Its not like a new model is going to magically get rid of the A/D converters, produce an analog audio path with true tube warmth and output saturation etc, know what I mean ?
For the price of a model pack I'd say your better off getting a tube pre of some sort, even a cheap one like one of those Art MP lines. Putting one of those before your audio card when recording really did warm up the tone a bit and was money well spent.