I'm not sure if got any long last cheap DVD player cos I have bought 1 that last only 1/2 HOURS ...there goes my RM$180 :evil: .For me,I would recommend Pioneer DV-585K,it can play Dvix format & also can upgrade it's firmware.I bought it last month & have upgrade it's firmware from 1.09 (ori version) to 1.09.03.01 version & it work great,new funtion that original firmware cannot do.Play most of my anime that I have download & burn except mkv,ogm & files with H.264.It cost me arund $390+.
Here the site for firmware upgrade:
http://www.pioneerfaq.info/english/dv585.php?player=DV-585A&question=Firmwaresoh ya if you scroll down on the download,you will notice there are several models can be upgrade.
Well I hope this info will help as far as the price are concern,as for other brand I'm not sure if can upgrade firmware or not cos so far I only know Pioneer can.