A friend has two Engles. In Grenada she said each draws about 100 amps / day. Don't know if the 2.5 is a supposed amp draw or what. 100 amps / day doesn't make it any better than any other box. But; the one good thing is that you can easily shut one down and you can throw it away and get a new one without a lot of expense (at least in the states). That may or may not be a good thing (throwing it out and replacing it with new - depends on you're particular bent).

Go Slow
Sail Far
Stay Long