I am thinking on getting the 4210 to match my 2205. That way my gear ( pedal board and switcher ES8) can do both the combo and the head. So pending on what I take with me I don't have to have something set up for my DSL 40C that I have now.
Nope.
The JVM410C would be worse to lug around than just the head, a cab (even if a 2x12) and the effects rack.