I agree that Bolivians are much more hardy than blue rams. It is next to impossible (IMO
) these days to find blue rams at a pet store that will live for more than a few months (usually not even that long). They are mass-produced and inferior quality most of the time. If you want to attempt them, try to source a hobbyist breeder- this should increase your chances of success.
If you're interested in some other options, check out species from the genera Apistogramma, Laetacara, Dicrossus- there are many species of Apistogramma available in the hobby, and several Laetacara and Dicrossus available as well. Creithracara maronii, the keyhole cichlid, is not technically considered a dwarf cichlid but is compatible with them due to its peaceful temperament and relatively small adult size, so that might be an option as well.