Hi dolos
I have the similar Line6 product (Amplifi 30) as a practice amp. Looking at the features of the VOX, the Amplifi seems fairly similar.
I love my Amplifi for practice, being able to pipe in music from your phone or laptop or even an AUX cable is brilliant and it also acts as a USB recording interface which means you can easily record and listen back to how much you suck.
The Line6 app is quite good, very intuitive and very similar to the interface on the Line6 Helix. That said, I think you will need to accept that Line6 might stop updating the app for every new android version so it might be a problem 5-10 years down the line. This is probably not an amp you are going to leave your kids.
They also do a Amplifi TT which doesn't have a speaker and plugs straight into your Hifi (this will also have the side effect of bluetooth-enabling your ancient Hifi). There is currently a second-hand one on SAMIS for R3k
If you are in the Bryanston area you are welcome to come have a look at mine. I probably spent 2 hours at Marshall Music fiddling with mine before deciding to buy it. (I downloaded the app in-store and made sure I was happy with it).
w.r.t. the tone, the cleans are good and the bluesy stuff is nice, but the high-gain stuff could be better. That said I has PAFs in my guitar which aren't recommended for major high-gain chops.
The Amplifi 30 is loud enough for the bedroom, but can't really be used for anything bigger. If you do decide to come check it out, name a song, I'll practice it and we can try to jam it together.
