Let me know if I'm missing anything here. They spec similarly with similar if not identical crossover and limiter. However, the ProLITE costs a little less, has native bridging, and most importantly (to me), doesn't look like it would be more at home powering a Kicker sub while illuminating the trunk of my kid's Civic. And really, even if you're not a snob, would you ever impulsively choose Peavey over Crest? The ProLITE does weigh in 3.5 pounds heavier than the IPR2 but as I've seen the inside of my IPR-1600, I'll cross my fingers and hope that translates into 3.5 pounds of better build materials. Yes, I know Hartley gets my money either way. Maybe that's the plan as he's been getting my cash for 30 years. How have the ProLITEs been working for those of you who are using them? I'm seriously considering one to go with a Peavey pre of all things.