CT racing cost 1500+ because it comes with everything. carb, exhaust, ECT...
I have the Vito's 12 port kit ported by Flotek it works great. I hear a lot of people end up getting the more expensive kit reported anyway so I would go with the Vito's and have one of our "in house builders" do the port job. I would ask around here and on some of the other 2-stroke forums such as e2s or bluetraxx and get some advice on who to get your port work from.
I highly suggest Flotek he did a great job for me, but ask around and make your choice.