So I was able to test a 25 Razor 4 (4 blade) prop today and overall it was a great runner on my 198. The holeshot was super quick, went from 30-60 in no time, it ran just a touch over 70 at around 5600-5650 rpms, thats with a medium load in the boat. I also couldnt believe how well the boat handled and there was no steering torque at all, even at wot. Just wanted to share my results, hope this helps someone.