i was speaking to hayden at matamp about the hot-100 and he said he thought it was a well designed speaker, and very transparent sounding, if boring. i guess it would sound very good clean. i've never tried it myself.
vintage 30s are not very transparent, they colour the sound, and many people think in a good way too. personally, while i like the vintage 30, im not overally keen. vintage 30s are known for their mid-range.
mixing speakers can work well. if you want more mids, you could try changing one of the speakers to start with, as an experiment. v30s get a good price on ebay if you dont like it.