Maybe the Sonic Frontiers SFL-1, the ARC LS-1 & LS-2.
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Chazz, if you want a hybrid amp with a glass front end then you must add the Van Alstine FetValve to the list. I was a solid state guy for a long time and recently went to a FetValve 550EXR. Very much a glimpse into the best of both worlds. It's fast, articulate, organic, natural, and has a low end that is clear and deep. Frank has recently updated the design to an Ultra level; I understand it primarily improves the overall transparency of the amp. I'm tempted to upgrade, but I'm so happy with the version I have that I haven't convinced myself it's necessary.