I withdraw my suggestion.
Jax2, Boa2 and Undertow have all been around this block, and they know what they're talking about.
I thought yours was a good point as well Grant. If I were to point to any tube amps for Rock I'd think about a KT88 amp in Push/Pull or Pentode. The ones that do rock best would be the ones that use a bunch of tubes and huge transformers, and would seem to be beyond the budget of the poster though. I had a Mesa Baron that gave great rock. I don't think the amps you're considering will have the same prowess and speed, not to say they are not good amps...it's just the 'rock' thing.... A Jolida 502B might be a contender, as well as the Prologues, but I still think the same money can get better boogie from an SS solution. I haven't heard the Manley Stingray, but can't imagine the EL84 tube in pentode giving the authority of a KT88, though the EL84 would likely excell in speed. If the percentage of rock were lower I'd say go for the tubes too, but if rock's your bag SS is where I'd point. Howard's hybrid suggestion is another good option. The Unico Unison is a great little amp in that regard too.
Marco