Absolutely LOVE my Slingshot bars and have a few from 2014, earlier and later years that I use. They're my go-to bars unless I'm in ultra light wind and I go for custom ones with race lines (though using Slingshot parts). The Compstick Guardian design hasn't changed for years and I hope it stays that way unless it actually needs to.
If you take care of the Slingshot bar and wash it after every use you wont have any issues. I've seen bars with swivel bearings permanently rusted but mine are perfect. I only use them in salt water with a rinse after every use (hint: spray some lube in there once in a while). The one thing old Slingshot bars will develop is wear around the depower line hole. Not a big deal but something to watch out for. When depower line starts wearing I pickup a new depower line, guardian box, trim rope handle, cleat and a bungee. Replace those parts and the bar is like new! Only takes a few minutes. To save a few bucks just get the depower line and cleat. I've never had my Slingshot lines stretch but I don't do crazy loops.
Obviously if your lines develop wear, get them replaced. You can usually pickup older Slingshot bars on sale. Keep the other bar for spare parts and fix things in a pinch. Did I mentioned I LOVE these bars?
