Pick a cam for me

Look at the dyno difference between the comp xe250 vs xe 268 is 35 hp and there's a xe 256 and xe 262 in between which averages like 12 hp gain from one cam to another. So how much difference of power could be similar spec cam across cam companies ?

The Melling cam vs the Summit cam vs Xe262h all would be similar performers probably all within less than 10 hp of each other.