I have used the VOX for about 15 years now when away form my rig or travel.
But it is falling apart and need a new one. Would like something that sounds better.
Which do you use and like?
I don't know if these are available anymore so it might not be of much help but since you asked "Which do you use and like", I've about worn one of these out!
When I was playing with the band I had all of our cover tunes on it and would jam along to practice. Love the slow down, and looping feature!
I forget whether mine is newer or older then @The Guilds of Grot but I use my Bass Trainer a lot, as well. Looks like the newest generation is a Tascam GB-10