I’m sure the OP will clear it up, but I do think “the wife doesn’t know about” is relevant. They could have said, that I found, inherited, won, blow on, or whatever. Instead they specifically said that the wife doesn’t know about. That implies that whatever tool they purchase must not be noticeable to his wife.
As I said earlier, a lime green 44” US General doesn’t hide well, nor does a 60 gallon compressor, table saw, drill press, or many other large purchases. I think (and concede I could be wrong), that the OP is looking to purchase something nice that won’t get noticed. If I really wanted to buy tools without the wife noticing, I’d have to be more discreet about it.
I could probably swap out my DeWalt miter saw for a sliding DeWalt version without the wife noticing.