@Engelbert - I recently bought a new pair of golf shoes myself so I’ll try to offer you some advice. Like the article says, golf is an expensive sport and the general rule of thumb is the more expensive the shoes you can afford the better. I know this sounds daunting, but if you want to consider it from a practical point of view, think of it this way: how long did your old golf shoes last? If you’re constantly replacing old shoes because they don’t stand the test of time then you’re spending just as much or more money in the long run anyway.
As far as shoes improving your game, well it’s obviously not a guarantee but I noticed a significant improvement when I upgraded. The feeling of comfort and stability helped me more than I can say and if I can be vain for a second, they look better as well! Always helps if you’re golfing with a client or business partner, or even if you just want to look better than your friends.
I think a better pair of shoes could help you to play better, but it’s all a matter of opinion of course. If you can afford it, then why not? If not, well as they say, practice makes perfect!