buying a mill is 90% want and 10% need. IMHO
like buying handtools. snap-on is pretty & sleek , mac, cornwell , S-K , even sears all will get the job done but snap-on and other big names make the speciality tools that help get the job done easier/faster.
it's all about preference and perception.
i had a corona mill and it would've served me well i'm sure from all reports i have read but i jumped and bought an $89.00 AIHB roller B.C. clone which was a little more than twice the cost of the corona. the AIHB mill has served me well but the point is the corona would have too.
i do BIAB and the crush isn't as critical as with fly sparge brewing.
match your mill to your brew style and save money or just say F....it and buy what you like/want/or supports your self-esteem....either way just enjoy making yer brew!