so what about the double rectos, although there alot more expensive than the engls
Different sound to the ENGLs, but as good as them I guess. Personally not a huge fan of the rectifier's thick wet sound, but it works for alot of people.
Regarding price - Its no >better< than an engl in terms of sound, so you would have to REALLY like the Mesa sound to justify the price tag.
It depends what works for you. The Mesa Dual Recto has a massive thick sound, and has 2 modes on the clean channel, and 3 on the 2 gain channels, which mean versatility is pretty expansive. If you want a slightly crisper, more British sound, you can swap out the 6L6 power tubes for EL34s. If, like me, you like a big, thick tone, they are worth looking at.
Engls, to my ears, sound very tight, crisp and powerful, especially on the heavy stuff, but I've only ever heard them played (first hand), not played one myself, so couldn't realy comment on how easy they are to tweak to what you want.