my favorite engl is the engl se el34, and i really liked the 6l6 version alot, i also owned the savage 120, steve moorse, and the blackmoore, they all sounded good, but i had the invader 100 and 150 and liked the 100w better but neither blew me away, and i owned multiple versions of powerballs which i loved in the beginning but grew to hate as i played the others i mentioned above which just sounded better to me. But i just had too many issues to continue supporting the company and i dumped them and bought a couple diezels which hasnt given me a problem and seem much better built, and i still have my mesa and bogner stuff which seem better built than engl.