I'm currently using a pair of Jensen Electric Lightnings (12s) in my Lopoline 212 cab (about the same dimensions as the EVH 212 - compact height/width, but deep) with my Classic 50 head.
It could very well be the cab, but that setup has a lot of low-end. Not sure if I'm keeping the head, but the clean channel is very nice with humbuckers; I can see why people say it's very 'boutique' in nature.
The lead channel is a bit brighter, but I've gotten a little used to it. (it's not the speakers)
If I were to swap out speakers today, I'd go with a set of Warehouse's British line: either the Retro 30, or the British Lead for more mids. I think with the EL84 power section, it lends itself closer toward those tones.
I have a 1995 Classic 30. Bought it new 20 years ago with the 112e extension cab for $550! Replaced the stock speaker (this was before the Blue marvel) with a British made Celestion V-30. Re-tubed with Tesla JJ EL-84s and EHX 12-AX7s. Became a totally different amp. The V-30 sounds very nice.
I dont feel like these are Vox-y. Maybe Marshall-y in a way but waaay more Peavey-y than anything. American as a Quarter Pounder.
I forgot to add -- I liked the Blue Marvel. The Black and Gold labeled Fender Eminences in Hot Rods and the Blue Marvel are GOOD speakers! Once they're broken in they're really really not too bad at all!
Eminence Cannabis Rex - Sounded okay clean, did not sound good at all with any distortion. Worse than the Blue Marvel.
WGS ET65 - Sounded really wonderful for the 5 minutes it worked. Unfortunately I got the amp off Ebay with this speaker loaded in and during shipping the voice coil must've gotten shifted or something because around because the speaker shortly died.
WGS Reaper 30 watt - Had this laying around and it went in after the ET65. It sounds great, possibly better than the ET65, it's a bit more aggressive though so it depends what you want. Sounds very nice clean and phenomenal dirty. So good in fact that every time I am tempted to buy a new speaker to try out I play the amp for a few minutes and GAS is cured. My only hesitation is that it's rated for the RMS power rating of the amp. The compression from working the speaker so much is great, but I worry sometimes about blowing it. I don't get the volume about 5-6 on the normal channel usually though, so I think it should be okay.