OP - I’ve feed rounds at our personal farm for 4 years and have friends and have boarded at places that fed rounds the other 15 or so years I’ve been in horses. The only negative incident is linked above - DO NOT BUY THAT FEEDER.
Rounds are so much more economical. I have had 2 horses on round bales year round for 4 years. It takes them 4-6 weeks to eat a bale. The hay hut with the hay hut brand net makes for no waste. I’ve done the hay chix net (not with the hay hut but the other feeder) and the horses put huge holes in it quickly. Personally, I think it would be a PITA to use the hay chix net then put the hay hut on vs just tipping the hay hut (with attached net) on. The most waste comes at the beginning and the end of the bale. The first few days I will take up hay they pulled out but left on the ground once or twice a day. At the end of the bale, there will be some that they deemed inedible so we will toss that too. Still incredible cost savings over squares. We use our compact (maybe subcompact?) Mahindra with a hay spike (usually no counterweight other than the rear attachment typically a box blade) to move the bales. We’ve had small bales (maybe 800lbs) and HUGE bales (near or over 1500lbs which is our tractors capacity). We store ours outside on pallets, under a billboard tarp and do lose most of the outer layer. I’d love to build a 2-3 sided shed for the bales but don’t have the funds for it yet. Ideally, I’d find a supplier where we get one bale at a time (but that has disadvantages here too - it could snow us in right when we need a bale). I wouldn’t/ won’t use traditional hay rings, really believe the only way to go is the hay hut/ bale barn style feeders. It takes us about 20 min to put a bale out (I personally cannot flip the hut alone), once every 4 weeks or so. I love that I can also use the hay hut with small squares (and maybe big squares but I’ve never tried with those) with the net even, if needed.