Yeah they have some great and exciting fighters. Former Pride HW contender Heath Herring who left Pride because he is in the sport to be a champion and when you are in an organization with Fedor, Big Nog and Cro Cop (and now Barnett as well), it just won't ever happen so he was wise to leave as he is a great fighter but go pummeled by Fedor, subbed by Big Nog and ate one of the nastiest liver kicks I've seen in mma via a Cro Cop roundhouse so he was there but was not able to deafeat the 1,2 and 3 ranked HW's in the world respectively.
K-1 heros also has/had Kid Yamamoto who is a LW and may very well be the best LW in the world, it would either be him, Gomi or Sherk when Sherk makes his LW debut (he is going to dominate that weight class for so many years IMO), they also have the most exciting fighter in MMA (most would agree, he and Fedor are the most exciting to watch) Genki Sudo.
They have also picked up Brock Lesner and I think he is expected to make his MMA debut in October?
The K-1 Heros is continuing to build their fighter pool and they have as deep if not deeper pockets than PRIDE (UFC comes nowhere near these 2 organizations financially at the moment) so I would expect a musical chair atmosphere where they will get some PRIDE fighters, maybe some UFC and they seem to be on theri way to becoming as good as PRIDE at recruiting new and generally unknown fighters that will turn out to be superstars.