ive been wanting to go digital for a while now and have seen plenty of reviews on here that all in all mainly point to digi-cool. I like the price of them however Ive never seen a pair in person and I don't know how user friendly they are. ive worked with techs that had testo 550s and fp smans. I don't like the testos mainly because of how unorganized they seem unlike the smans. the smans ive used have a nice display and goin thro sh and sc to sat. temps is easy to do for someone like me who has never owned digital manifold. so its up in the air between sman3s and digi-cool ak900. I like the display and operation of the smans, don't care about the crappy micron sensor because I wont be using it anyway. I don't like how slow the fp thermistors are.... ive read yalls reviews but really haven't seen anything about user friendliness. some opinions would be greatly appreciated!