#1
Actually what it says rather than tube vs. ss like my last topic with this name!

Anyway, I'm looking at two tube amps. The first is a Fender Blues Junior(Class AB, 15 watts, 1 x 12 speaker, combo), the second a Blackheart Little Giant stack (Class A, 5 watt head, 400 watt used 4 x 12 cab if it can drive it, if not, 75-watt 1 x 12 cab to put out power through).

The stack is cheaper, but I prefer the combo form factor, plus Fender is a reliable name in my experience, and I've never bought a Blackheart product. Plus it won't go through tubes as fast(Class AB burns out slower than class A).
THE FORUM UPDATE KILLED THE GRADIENT STAR

Baltimore Orioles: 2014 AL Eastern Division Champions, 2017: 73-78
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#2
fyi blackheart is Crate. I don't have any experience with them either but figured I'd let you know.
#3
What 4x12 are you looking at, are those the only two amps you're looking at, and what are you looking to do?

Also: Your sig is misinformed.