So I'm just starting out with the Go, and don't know much about the dozens of cabs available on Go/Helix...  Are there particular cabs which are renown to be the 'greatests', and why?  Are there any amps which with certain settings really improve the way they sound or are the defaults typically good?   Do you tend to mix and match amps and cabs, or just leave the link amp/cab option and don't really care about cabs?