Flat tappet to solid roller...

Any other camshaft manufacturers I should check out?

I am leaning towards Comp cam with Lunati lifters, springs and retainers but Lunati seems to be good option too.

Comp:

• Duration @ .050 (Int/Exh): 248/254
• Gross Valve Lift (Int/Exh): .576/.582
• LSA/ICL: 110/106
• Valve Lash (Int/Exh): .016/.018
• RPM Range: 3000-6500

Lunati:

• Duration @ .050 (Int/Exh): 243/249
• Gross Valve Lift (Int/Exh): .578/.585
• LSA/ICL: 110/106
• Valve Lash (Int/Exh): .016/.016
• RPM Range: 2800-6800