What are the tonal, feature set, and characteristic differences between the:
ENGL Powerball, ENGL Invader (100W or 150W), Mesa Boogie Dual or Triple Rectifier, Soldano SLO1000, and Hughes & Kettner MKII?

I'm looking for a high-end head used mainly for leads, and I DON'T only play metal. Crisp, organic, and natural cleans are very important, as well as a tight, smooth, overdriven lead tone, as I mostly play lead (not that much riffing).

You probably should have stated Triamp MKII.

Anyway the Dual and Triple Recto are known for being somewhat 'saggy' as a result of the tube rectifiers... can't comment on the others as I haven't tried them.
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