Budgies wont sit on certain perch rings

So as the title says, my budgies wont sit on certain perch rings that I bought for them. They are 4 budgies in a fairly large cage (30x20x50in). I used to have just 1 ring perch which they would all take turns on, so I decided to buy 3 more. They only had 2 rings at the store, so I bought a small triangle perch instead of a 3rd ring. The triangle swings, and they all seem to like it the best. The funny thing is that now they all take turns on the original ring and the triangle swing, but none have gone on the other 2 rings yet. Its been about a week, at first I just thought they didn't notice them yet, but that can likely be ruled out at this point. They are kind of 'fancy' rings, as they have a bell and other toys attached to them, where the original one is just plain. I attached a picture so you can see. Any ideas how to get them interested?