Hello,
 Was looking for recommendation on which had better overall sound - the Brookstone Dual Drives or the M-Duo Dual Drives. SPECS here http://www.meelec.com/MEElectronics_M_Duo_Dual_Driver_In_Ear_Headset_p/ep-dd53p-bk-mee.htm and here http://www.brookstone.com/earbuds-microphone-music-ipod-iphone-ipad?bkiid=SubCategory_Electronics_Headphones___Earbuds_Earbuds|SubCategoryWidget|650580p&catId=.
 
Both similar price -- Read good reviews of both -- looking for something to sway me either way. On surface glance -- Brookstones have higher impedance (24 to 16) and larger drivers (15/7 mm vs 9/5 mm), but I know that's not everything. Also, if you've got a suggestion for something different you think is better in the $50 range (still in-ear) I'd appreciate that too. Thanks very much,
  Brad

I suggest you have a look at the Vsonic VSD1. You can get it here:
 
http://www.lendmeurears.com/

Thanks, these look really good...and the VSD1S sounds like it might actually be better for my purposes as these are for my Dad and he listens to a lot of Jazz.    I had been drawn to the other two because of the dual driver, but it sounds like perhaps that's not the be-all-end-all...

btw have you checked out these comparison threads:

http://www.inearmatters.net/2009/01/list_01.html

http://www.head-fi.org/t/478568/multi-iem-review-302-iems-compared-1964ears-v6-stage-added-11-12-13-p-806