I would say if you like to meet up with some similar minded buddies, down a few alcoholic beverages, reminisce about previous Special Forces adventures, put the worlds problems to right, flirt with the bar girls, people watch ( and criticise ) the old expats with the younger Thai ladies in tow to give marks out of 10 regarding their choice of company for the evening then Pattaya is the place to be.
If you are a family man with a couple of lead weights in tow who long since retired from the bar scene and prefers a sedate lifestyle with the odd hobby or two to break the monotony then any Thai city or even village will suffice. There’s not much difference from them ( barring BKK, HH, CM and Patts of course ).