MP .528 Solid Cam Upgrade???

I have a .528 solid cam in my car now with a 9.5 cr flat tops, ported j heads(self done so might not been that great), 1.5 rocker arms, rpm air gap, 750 pro form main body carb, tti exhaust headers through 3 inch exhaust, 2500 stall convertor, and 904 steep gear set transmission. The car ran a best of 7.89 in the eight mile with some 3.91 gears and 26" tall slicks. I am moving to more of a cruising car than a drag racing car. I put a set of 3.23 gears and the car, so I can ran 75 mph on the interstate. The car has a cracked head now(remember the self porting 10 years ago), so I am looking at buying a closed chamber head and bumping my compression ratio up around 10-10.5:1 depending on which head. I was looking at buying a set of Edelbrock RPM, but it looks like everyone likes the RHS heads from IMM. I figure the higher compression ratio will work well with the cam, because I can run 87 in the car now with no problems. I did a cold cranking pressure before pulling the heads and it was 150 psi. I had to run 91 with the Comp Xtreme Energy 268. The car runs awesome when you open it up, but I wouldn't mine moving the powerband down maybe 500 RPM. You have to start running 2400-2500 RPM before it really starts to "clear up". I have the cam installed straight up. I thought maybe advancing the cam some or possibly going to the small Hughes solid Cam or other brand solid cam. I hear some people saying the MP cams are outdated and others are better; but almost everyone seems to like the .528. Anybody run similar cams and like it better?