not certain of which ones still accept. However, I know for sure that Tropicana Express does NOT accept Ramada Express chips. Golden Nugget no longer accepts most older Golden Nugget chips.

Colorado Belle still accepts Colorado Belle LE chips and has accepted Edgewater LE chips, but Edgewater does not accept either's LEs. (Go figure.)

I am pretty sure that Harrah's takes them back.

I have no info for Riverside, Pioneer and Aquarius, but of course all Flamingo, Laughlin chips are dead. I believe that River Palms LEs are still good.

I hope this helps.

Jim