Hi!
I have one too. The Guitarport sounds amazing. From my point of view even better than POD II (can't say anything 'bout POD XT, because I haven't tried it yet.
If you want to play guitar at home with an outstanding sound, it maybe your choice.
The only thing I have to critisize is it's ability for homerecording. If you're into that I suggest first trying it with your system before buying it. Sometimes it likes to draw half of my systems resources, which makes it difficult to run it with a rather demanding sequencer software.
Still, give it a try, it's worth it.