I had a performance V12 and now have an Elite V12. I'm not a pro so results could be differnt for others. But I didn't notice a signifigant speed diffence really, and it's def. more fragile. I hit rocks with my performance and barely scraped the hull. I was thinking the weight for portages in river races I do, but on the water they both feel similiar. On Epic's site Eric B has a weight review on the Ultra and Performance. Hope this helps. Chaz