Totems

why not go straight to the Mani-2's? Although - recognize they are not at their best unless you have a lot of power - but that doesn't mean they can't sound great with less than optimal power.

Otherwise - isn't the Model One the only upgrade if you want to stick with a Monitor (unless you manage to come across a set of Tabu's.

Why not also consider a floor stander like the Forest?

the footprint of the Sttaf (and for that matter the Hawk and the Forest) is smaller than any stand you will be able to find for monitors - this is why I suggested the floor standers. It seems to be a prevailing assumption here that monitors take up less space and cost less than floor standers - which may be true compared to large full range floor speakers. But, IMHO the truth is you'd be hard pressed to find a stand mount speaker that will take up less space, cost less (including the stand), and out perform the compact floor stand speakers produced by Totem, and other comparable mfg's. If you intend to place them on a table or bookshelf - then a monitor is the only way to go, but if on a stand, you're kidding yourself to think monitor is your only or best option.

I have a pair of Sttafs and used them in a bedroom that's 10x12 - they are awesome sounding and very unobtrusive. Whether they are a significant upgrade to the Rainmakers is the reason I suggested the Forest. In your room though the Hawk may be a better choice, if not a Model 1.