Depends how you use it..
I deliberately bought DP 831 and not DP832, because DP831 has +/- 30V channels with common ground for op amps and other symmetric power buses, and 8V channel is isolated... I use 8V for logic and such, and can have separate analog and digital ground for mixed signal stuff ... I don't use DP831 for high power stuff, have other supplies for that...
It's all about right tool for the job, there are no truly universal instruments...
Cheers.