-It looks like (if the box picture can be believed) this one has the USB cord going into the keyboard, as opposed to the Rosewill designs that use mini-USB. From what I hear from JBI's experience, this is a good thing.
Using a mini-USB connector is only a problem if done wrong (and yes, Rosewill did it wrong). Some keyboards with detachable USB cables recess the connector underneath the keyboard; if done that way it isn't an issue since it isn't getting bumped all the time.
Looks to be USB from the reviews.
I don't get why so many people say in the reviews that it feels/reminds them of a Model M. I don't know about you guys, but blues are significantly lighter than the springs I remember. Maybe I'm crazy.
No, you're not crazy. *Some* buckling 'boards are indeed a lot stiffer. Of the two Unicomps I own one is quite stiff, but the other one is only slightly stiffer than Cherry blues. The inconsistency of the Unicomps (one was at home and one was at work so I was switching back and forth daily) was one of the reasons I decided to switch to Cherry-based 'boards.
Maybe it's just the click people associate it with.
I'm sure that's part of it. An MX blue 'board without o-rings is pretty loud; I'd say the sound is similar but not identical to a Model M, with the main difference being that the "click" at the actuation point is higher pitched.