I would personally get the Hartke, I don't have much experience with either but you will find more Hartke lovers than Acoustic (GC Acoustic not real Acoustic, people love them). The Hartke's I have played I have really enjoyed, I would definitely consider them if buying another amp. I probably would have gotten one when I replaced my SVT a while back but my local Hartke dealer shut down. Larry is also amazing in the customer support department from what I hear, I am pretty sure he is on TB.
Either amp can handle your cab, you were smart and got 8 ohm instead of 4 so you can add another cab to either head. As far as a good tonal pairing, that is an opinion so it is up to you in that regards.
Carvin LB76 / Dingwall ABZ ! Support Local !
Markbass SD 800
Epifani UL2-310 / Markbass 104 HF-4
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