Of the gabaergics I've tried (alcohol, ghb/gbl, benzos, phenibut) the best euphoria is from ghb, second is alcohol, third are benzos and fourth is phenibut which doesn't have any but just gives nice sleep. Benzos + alcohol is dangerous if you take too much (and it's easy to) or to often (yay benzo addiction), but you can take some benzos and drink a beer or two and get the same euphoria you'd get from being very drunk, but you won't have a hangover next morning and it's probably healthier for your liver.