If you ask me, practically ANY album from the 60s that has a dedicated mono mix - as opposed to a folded down stereo mix - sounds better in mono, as that's how most of them were intended to be heard (stereo being little more than an expensive audiophile gimmick prior to 1968 or so). Therefore, more time was spent on the mixes, and they were usually done with the band's participation, as opposed to the stereo mixes, which ewere usually completed by an album's producer/engineers in a much shorter space of time.
The most obvious exmple I'm familiar with is "Their Satanic Majesties Request", which is practically a different record, to the point where i'm convinced that if it had been the version most people heard at the time it wouldn't have garnered such negative reviews (unfortunately, most UK pressings are fold-downs). The monos of "Odessey and Oracle", the 13th Floor Elevators' debut, Pink Floyd's debut and those of the entire Beatles catalogue prior to "The White Album" are all superior listening experiences to my ears.
I haven't yet heard "Are you Experienced" in mono, but if I could track down a torrent of it I'd be interested. Another stupidly rare mono mix I'm trying to find a copy of is "Safe as Milk", but as original pressings go for up to $700 and all non-US pressings - and even the bootleg CD - are fold-downs, I doubt it'll ever happen.