I bought two different types of frontosa, and they are also two different levels of quality.
I first got into fronts and bought 6 burundi juvies from petco. They are about 6-8 months old now and are getting much more colorful as the grow (they are now 3-5 inches) . Burundi are not as blue and are known more for having a big hump on the head rather than having super color on the bodies. I actually find my burundi have decent color on the body as well.
After enjoying and keeping the burundi for about 5 months i did alot of research and liked the colors of the rarer more expensive fronts (zaire and Tanzanian) So i contacted a breeder on a front website and ordered 10 mpimbwe gibberosa (gibberosa are also frontosa but are bluer species from the other end of the lake) . THese little babies are only one inch now and are so blue when they get excited they practically glow. I will send you some pics of adult fish from my frontosa website in a pm cause i dont want to post them on the open forum since they are not my pics.
Sounds like you want the tanz,zambian, or zaire variants. any of those should make you happy.
CG