I came up on bass too. It was with some uncertainty that I traded my Applause acoustic towards a U Bass, it had served me well for the last 10 years. But I have no regrets. The U Bass is a whole different animal ( a much easier one to tame) Sounds like an upright, plays like a uke. I also own a Michael Kelly fretless acoustic. Strung with flatwounds it's one of the sweetest sounding acoustics I've heard. I'd have a hard time letting that one go, but still I wouldn't be too surprised to one day see a fretless U bass hanging in its place. Give a U bass a chance, and you'll see the purpose. Many of my guitar playing buddies now want one just for the portability of it.