I'll let others offer brand and types. But I wouldn't want to tie up my tractor with the splitter. I find moving wood to the splitter with the tractor is too useful and handy not to have the splitter separate.
But it is a tradeoff, on running two engines vs one, so each to their own.
On large diam lengths, I roll them in the bucket, lift the bucket to splitter height, and then work the large pieces down without lifting them. With the forks on the 3pt, I can load and move the pallets of split wood around as well during the same splittig session.