It all depends on your feet. Basically, golf shoes or not, shoes must be comfortable to wear and should fit well. Also, the shoes should fit your budget as well as your lifestyle.
Out with the old
Old golf shoes have those spikes that are made out of metal. These types of footwear are no longer allowed on the golf greens. Throw them out and get a new pair of great golf shoes. Current makers of golf shoes use spikes that are soft and made of plastic.
Brand it or not
The brand is not as important compared to fit, comfort, and style. You may have the shoes that Tiger Woods wears but that does not mean you will play like him if you wear the brand of shoes he wears. Be realistic. If you prefer the slip-on golf shoes rather than the ones that you have to tie, go, and get those. It is your opinion and preference that counts more than anything else. Listen to what your feet are telling you.
Why are they on sale?
Golf shoes are different and unique. Though you could simply settle for any shoe that fits or any shoe that looks good because they fit your budget, this should not be the only consideration. Take this as an example, a golfer once bought a pair of golf shoes simply because they were on sale. Lo and behold when the golfer tried it on the actual greens, he found out that it was a pain to the feet and very difficult to keep on as well as to tie.
So please do not forget to try it out first. Your feet would know better and then let your wallet speak after your feet have decided on the shoes. Walk around the store with the shoes you are intending to purchase. Make sure though that you also try on other pairs.
Know your real golf self
However, if you do not play golf very much, it is best that you purchase the kind of shoes that just as well do not cost as much. But if you are a devoted golfer, shoes that are waterproof are the best option. These shoes are good for walking as well as sloshing along the greens. But if you are a golfer that is not so serious about playing and you enjoy walking over the hills, around trees and tees more than playing or putting, then going waterproof may not be an option for you.