Benzos over alcohol DEFINATELY.
Admittedly they're fairly similar, but the main reason I favour benzos is because they're just 'cleaner'...not so much in the way of unpleasant periphery effects- no nausea, no headaches, no HANGOVERS.
Seriously...on the whole I don't drink anymore (use to be a bit of an alcoholic in my youth...then I started to get
real hangovers

), if I want that sorta buzz I'm definately reaching for the benzos. The last time I got drunk (like 8 months ago, after I kicked the junk- PAWS is hell) I remember thinking that 8 shots of bourbon in 2 hours felt like a really dirty, toxic, rough version of diazepam.
I enjoy the clinical feel of benzos...benzos are like smoking weed through a vaporiser, alcohol is like smoking huge baseball bat spliffs that are about half tobacco. It's the same kinda buzz, but a vape is very clean, clinical & 'selective' in its effects while a spliff is a dirty, rough, full-spectrum high. If alcohol didn't come with all the horrible physical side effects (which seem to get me particularly bad- I have particularly light dopesickness and extreme hangovers. weird huh?) I reckon I'd favour booze.