Peavey XXX:
A poor mans recto with a beefier gain but a lower quality bottom end. This is my Death Metal amp. Great for thick fat saturation with the EL34s and a great bite.
Engl Savage:
I just got this 2 days ago, but from what I have heard so far, it's the tightest most aggressive amp I have owned. Like a 5150 on steroids. No need for a boost. Can now see why Gary Holt favours this amp. Best thrash amp by far. Can also do Death Metal as well, because, well, the tone comes from the fingers!
Engl Invader 150:
Most versatile amp I have ever owned. Channel 1 great cleans. Channel 2, great Marshallesque tones. Channel 3, great Death Metal tones with a boost (Maxon 808). Channel 4, great lead tones.
Peavey 5150:
What a great all rounder. From thrash to death. Can be a tad bit un hi-fi on the bookends (Lows and highs) compared to the Engls. Mids to high mids is where this thing shines. Forget about cleans. For me, it has to run a boost, unlike the Savage.
Peavey 6505+:
Same as above with a slightly softer aggression.
Mesa triple rec:
For myself, one of two amps, (and I have tried others), that didn't really excel at anything I wanted. Overpriced, but well built and great functions. This thing was not as aggressive as the 5150, not as chunky as the XXX, now where near the savagery or tightness of the Savage and not as driven as the 6505+. Cleans were quite good though. As is the quality of the bottom end on this amp.
Bogner Uberschall:
For myself, it was the worst amp for metal out of the heavyweights that I have played through. It just didn't do anything for me. Up there with the Mesa for overpriced Death Metal tones. May be awesome for others in another Genre, but no love what so ever for this well overpriced head here in Oz.
Marshall JCM 800 2203:
Bite is good, saturation is , well .......... not so great, even with a boost. Like a less aggressive version of a 5150. Also another amp that did nothing for me.
So, thats my amps and my opinions. As with any opinion, it's gonna cause controversy, but this is "ULTIMATE METAL", not ultimate hard rock, or ultimate grunge, or ultimate alternative. This is purely an opinion from a Death Metal head, and this is what I choose to cover that genre. Not many Death Metal heads here, so this will only interest a few. Should be a few Melodic Metal players chime in with a different view, also rock, grunge and alternative players with their faves. Hope this helps.
Gotta E570 coming next week. So I'll give you an update on what that achieves in the DM stakes.