MG12 QR Maggies with Mye stands, or 1.7i's with stock stands?

First off, how big is your room?  Will it accommodate the bigger 1.7's? I'm partial to modding Maggie's myself and there are others who believe they're fine as they are.  I have MMG's in a 12' by 18' room and have done the following... Chucked the stock stands and fashioned metal "L" brackets to position the speakers at a perfect 90 degrees. I then anchored the brackets to 12" by 15" by 2" thick  Mapleshade speaker platforms, this raised the speakers about 6" off the ground as well as adding weight and stability to the speakers. I upgraded the fuses and replaced the metal jumpers with 3" runs of Mapleshade solid core speaker wire. The end results for me have been much better focus, probably a half octave of bass and a bigger, fuller presentation. There are far more elaborate mods that can be performed and if you scan the Magnepan user groups you will find an endless amount of things that folks have done to their Maggie's.    One site in particular to check is the Magnestand site where "Peter Gunn" (not his real name) does a complete overhaul on certain Maggie's (the 12 is one of his fave's) which includes new frames, a rebuilt crossover and other mod's, however the price of admission is several times the cost of the base speakers.  Those that have done it swear by the end result and I've yet to read of anyone regretting their investment.  Any how, keep us posted as to what you decide to do and good luck!