Never been a Hartke fan. Just not my sound. The newer Hydrive cabs (I think that's the name) sounded much better than the all aluminum TO MY EARS. I have known people that love the all aluminum speakers and I have no problem with that. But I don't think Hartke makes ANY amp that will be louder than an SVT Classic. Even if you don't like SVT's, and some people don't, it's hard to argue with the sheer force that comes from a large, loud tube amp. i have an SVT 3Pro, an old MTI era SVT, and a Genz Benz STM900 Streamliner. The Genz is louder than Hell, but the SVT FEELS much more powerful. I like all three for different reasons. When I start playing out again I will more than likely use my 3Pro becasue I really like the sound and it isn't overpowering with volume. The Genz would be my second choice because its light and would fit on smaller stages.
I guess this is the long way of saying that a sound man isn't going to tell me what gear to play just because it makes his job easier. Make yourself happy with your sound. If the SVT isn't right for you I'm sure you would be able to trade/sell it for something that fits better.
I picked up a Hartke cab with the aluminum speakers and a Trace Elliott head on the cheap from a guy needing cash several years back. I could not stand that cab. Those aluminum speakers had a tone that was not very pleasing at all to me. I flipped it a few weeks later. Then again, I also bought an all original 1971 Ampeg V4B from that same guy. It had once belonged to the bass player of The Kentucky Headhunters. It sounded great, but I was afraid of it breaking and costing a lot of money, so I sold it on eBay to some guy in Arizona.
If I'm going to lose a GAS item to someone, it should be a TBer 
