We have been running Massey's for about 12 years now. I used to have an MX135 with their IFS and I thought that rode really nicely. That was replaced with a Massey 7480. It had 380R46 tyres and didn't ride very well because of it. That got replaced with a 7618DVT and we kept the same tyres. It has front linkage and no front weights. I thought that rode worse, which it does, however, when I have had 600kg of water in a tank on the front linkage for ballast it rolls along like a 1970's Citroen

. So, as long as the tractor has enough weight on it to compress the front axle it will ride nicely.