Rh recommendations are the same 60-70%Rh depending on your personal preference. If you get a Vinotemp or other temperature controlled unit you should set it at its highest setting or about 66degrees. Most wine coolers are thermo-electric. Compressor type coolers or refrigerators will also work. But they need to be used with an external thermostat or temperature controller in order to increase their max temp to 66degrees.
There is an alternative to a cooled system and that is freezing. Many people freeze all of their cigars(singles and boxers) with no negative effects. See SilverFox's thread on Freezing for more info.