I myself like Holley DP's as I have very good results with them and I find them easy to tune. I have a 750 DP on my sons 400 Dart. He has tried an 800 and 850 and went no faster so he ended up going back to the 750 which has run 11.40's in his mild 400 Dart. If you like the Eddy carbs I would agree the 800 Thunder series seem to be better from what I hear. Both the Holley and Eddy carbs can work good as it just boils down to which you care for and have good results with. Ron