I went to guitar Center today to try out some heads because I'm looking for a different sound.
I use a Littlemark II head and an RS210 cab. I have two for more volume. I like the sound/tone of my set up and I get a lot of good usable tones during gigs. Only sometimes I'll plug into something else in a studio or someones house or a back line and I'm very impressed. So, I go and search for something that I want that has a tone that i like that that fits my budget and ability to transport.
OK. So I end up picking up a Rumble 350. I'm A/B'ng today and I cannot decide if I like it

. I think there are some usable tones that I am getting out of the cabs but I think its fair to say that I can do just as well with what I have already in the Markbass. The Rumble does has a cool EQ. Something about it is like candy though. And maybe the Markbass is more like a decent burgher. IDK.Thats a little weird I suppose.
I will say this with confidence. The Littlemark has a much louder, cleaner, just as easily to manipulate, tone. I dare to say its a much better head but its also possible that with the right cabinet, the Rumble will provide the right stuff. This weekend I will gig with it and I will know for sure if thats the way to go.