I have been using a Syjet drive in my computer for a year now.. It works great.. Then only snafu is (on an IDE Bus) you have to set it as Master. My CD-Rom won't let me set it to slave.. So in my case some of the Win95 features (ie, turn sleep mode off) won't work.. But it runs fine otherwise..
I have an EX4, but right now I'm using an external SCSI CD-rom drive.. I heard that there is an English-built unit that has a cd-rom & Jazz Drive built into a 1space rack unit.. I didn't look further into it because it would've made my feel bad about bying a separate cd-rom drv.