Opinions on R450 vs 4995

Right now Im running an 07 4995 with a 995 head and tri-lobe conditioners. I had some trouble last fall with milo feeding through the rollers and now I'm having trouble getting heavy triticale to feed. Seems the rollers load up and it doesn't have enough power to pull it through. Curious if anyone on here has upgraded and if there's much difference between the performance. I've found a 2011 r450 with v10 conditioners and i think it should feed better than the slick tri lobes, what's your thoughts?

Opinions on R450 vs 4995