They'll let you try all the speakers no problems. I don't know if you've seen the Matamp board but rumour has it Dave used HOT 100 to fine tune the Little Rock tones. Its a very neutral speaker so lets true voice of amp & guitar through. I have one in my burgundy cab, although I'm toying with getting seperate cabs for the Minimat and the King Street and adding a ABY switch and things get interesting! If I do get a new cab a HOT100 is a must in one and Celestion Heritage G12H is very tempting especially for the King Street.