I've heard lots of great comments about Case/IH's sickle mower with a wobble box, think it has a V-belt drive, and it's also sold under the name Howse too. Not sure when IH started making them but there may be mowers just branded IH with the wobble box. Our old Oliver sickle mower needed lots and lots of new parts 60 years ago. dad made up his mind to get a new sickle mower, a trailing 9 ft cut IH with the wobble box sickle drive. It was CRAZY expensive, like $2500 in 1965 Dollars. neighbor was in the same situation, and for about what the first batch of parts for our existing sickle mowers, we both bought Brillion 6 ft rotary mowers, cut a panel off the right side to discharge cut hay. It wasn't quite as fast as a sickle mower but I never had to stop and clear a plugged sickle bar.