ive had the admire, the indulge and now have the attain... id have to say attain hands down
tethering is a BIG thing for me (Apk: DIY phone gadgets 1 click tehter no root)... i can tether with the attain with NO ROOT (: got to love that. plus i have benchmarked the induldge/attain on tethering and ATTAIN blows it out of the water.. ive had my attain tetherd to my ps3, my schr720(admire), dell laptop (metro sometimes wont conect laptop due to no root) and made a phone call while on speaker phone for two(2)hours with NO LAG or OVERHEATING
the Induldge needs root to tether plus it runs hot after 45 min. or so :-/ i gues it all should be based on what it is you like to do with your phone. plus the interface transition is A LOT smoother
two thumbs up for the Attain