I'm a newbie to the world of guitar syths. I was thinking of getting a Roland GR-20. It would be awesome to have the ability to play "piano" or "strings" on my guitar, but I find attaching a Roland pickup to my guitar to be a nasty and nightmarish thing to deal with. So I'm wondering if there's any good synths out there with those kind of capabilities without attaching a nasty thing to my guitar to get it to work. Any suggestions?