I'm a ramper for Allegiant at BLI, and I can say I'm pretty impressed with the maintenance guys here. Last night, for example they were out there with us till about 1am while we were doing our cleaning rounds, fixing every little thing that came up over the course of the day from passenger lights, to a false nose gear indication.
Of course it seemed these things were fairly quick and easy for them, but to me it shows a certain dedication that is refreshing to be around.
As I'm still a newbie with this particular company, I havn't flown on any Allegiant aircraft myself yet, but I would have no hesitations to flying myself, or sending anyone I know with them.