ANSI spec means what? What Ansi 4100K Rebel PN were you unhappy with?
I've seen some Rebels that colored my room equal to my XPG's, MC-E's... just have to make sure you grab the higher CRI Rebels if you need better. If you have a ANSI 4000k 70-CRI Rebel, don't expect it to be any better than any other higher CCT low-CRI LED. But, if you need close to 90-CRI, you're pretty much stuck in the 3000K region, with most manufacturers. There are those 80-85CRI 4000k Rebel ES's too, if you can find them. I do wish that they would come out with 5w-20w+ large Rebels.
I do wish that the manufacturers would quit chasing lm/w until they can get CRI and K balanced out. Its looked like they were just trying to run their stock prices up over the past few years. Sad that most consumers will just buy what bulb they see on the shelf, or whatever is being thrown(marketed) at them. So, we're stuck with LED bulbs that don't really perform any better than CFL, ESL, LVD... bulbs, with a major price increase(store, supplier, and manufacturer profit margins).
I too have a few light fixtures/lamps with mixed bulbs trying to get the balance that I want.