I actually prefer Bappi’s non Disco music as a whole. However I think it’s cool he also created Bappi-Disco, a style within itself. Hindi film music became a lot more saccharine post the 80’s.Guessed that you haven't listened to Bappida's Disco Dancer LP. DD is undoubtedly the best album.
I have Disco Dancer too and the pressing is great on HMV. Dance Dance is when T Series used to do good pressings.
Comparing only the two, Dance Dance is more international whereas Disco Dancer more Indian. I like Dance Dance for having Alisha Chinai who does a great job.