As far as ripping engines go dbpoweramp and EAC are identical and what everything else is measured against. The only benefit I see with dbpoweramp as a ripping tool goes is that you can rip discs that are present in the AccurateRip database in burst mode if the CRC match. I don't mind leaving EAC in secure mode and checking CRCs with AccurateRip, it only takes 5-10 minutes longer per disc, really a non-issue on a multiple core CPU.
Also with a lot of my CDs, which are using unique or rare mastering dbpoweramp switches to secure mode if there is no AccurateRip info in their database. So it ends up taking the same time or longer than EAC test and copy any way.
The batch conversion features in the full version of dbpoweramp are fantastic. But for my uses EAC is fine since I only rip to FLAC.