Using OCS for compatibility reasons? WTF... ECS is backwards compatible with OCS!
Granted most things work but there are some poor written or hw banging things that can fail and for that I want a compatible system.
@op
From what i've read if you have a 1mb agnus or better and the Indivision ECS you will get ALL ECS modes! AFAIK of course google is ur pal 
Apparently Google is not my friend as I ran by him and he directed me to ask the question in my favorit geek forum. I'm simply asking to see if anyone have experienced compability issues with some odd software or demos?