I recharge mine about once a week also.

I haven't heard a lot about those Oasis units personally, but they seem pretty cool. I have definitely heard nothing bad about them.

but read the fine print too...

"*Approximately one year of unattended operation without refilling or replacing sealed cartridge in a well-designed, tight fitted humidor with 75-125 cigars and opening three or four times a week."

Of course it would still be a hell of a lot less refilling than what your doing now tho.