Ran across these looking for some Vox AC30 cabinets and liked what I heard. They all have nice bite to them, in a nice way. Something to listen to samples out there and see if it's worth trying. Defnitely helps the plugin amp sims like TH2 and out.
The people are pretty cool and have some good points about making impulses that sound good in mixes. The samples are just with free amp sim plugins out there, so again I have no way of knowing what they'll be like for our racks, but I like what they have done. They have cabs like Blackstar HT, 5150, Suhr, and 3rd Power also.