I think the Peluso's are a step down from the KM184s, quality-wise. But, on the other hand, I find intriguing the option of having omni, subcard, card, and hypers caps.
If it were me, I'd go with MGs - love their sound. But, of course, you should listen to a whole slew of recordings with the different mics you're considering. At least if you buy used, you can basically get out of 'em what you've put into 'em, so swapping mics won't set you back any cash. Used mics = easy way to figure out what you like, try a lot of different gear, without taking a big depreciation hit.