Any brand CHE will do, but you may need to see about what wattage CHE is ideal for your enclosure. You will also want to make sure that you get a thermostat for your CHE so that you can regulate it.
You may also consider leaving your heat source on 24/7. Gargoyle geckos are known to bask under warm temps and seem to enjoy warmer temps over crested geckos.
For your enclosure, I'd probably get a 75Watt CHE and throw it on a thermostat till you are getting a basking spot of about 75-78F.