I use an IK MultiMedia AXE I/O and it's great but a little pricey (when I bought it, they threw in all of AmpliTube 5 for $50- a $250 discount so that helped). If you don't know much about USB interfaces I made a video about getting started with AT5 but that link has the time stamp for where I talk about USB interfaces and go through all the features you should consider.