I trust BigDWiz's reviews and he is impressed by ithe Orion 2500.1D's output. I've heard about the overheating issue, but if you feed the amp with high quality 1/0 OFC wire, I think you'll be fine. The folks reporting overheating are typically using lower than recommended gauge wire.
BigDWiz' Certified Dyno test reported 2771 @ 1ohm load (12.7vdc)
https://www.youtube.com/watch?v=DMBV0dVAtUo