6 more amps, any two effects at once, more user presets, and best of all you can upgrade the old Catalyst to CX with a firmware update!
https://line6.com/catalyst-guitar-amps/
Yes the u shaped plastic trim on the top of mine has broken, and this is only from home use. I quite like the sound but the build quality seems flimsy. I'd be disappointed if I didn't get it for such a great price on sale.