Love love love Dubai, Abu Dhabi (even more so than Dubai), Las Vegas, Florence, Ibiza, Nice, Monaco, Devon, Cotswolds, Copenhagen, Stockholm. Probably in that order. I've been to most of the above twice or more.
Meh: Budapest, Cancun (shit food), Zurich, Dublin, Vietnam.
Never, ever again: Thailand, India. Dirty, poverty stricken, hassle everywhere you turn. Dangerous travel conditions & a disgusting attitude to women (India more so). Fine for my younger days, but now…no thanks.
Just never, full stop: any all inclusive resort, any resort geared towards children (yes, I have DC & it boils my piss when parents think these places are their only option), Tenerife (boak), Benidorm (double boak)
I'm glad I've experienced all of the above, though.