Turbo Upgrade

Hi Guys

Came across this article, I'm starting build in 2 months and upgrading my turbo's is definitely something I'm looking at doing. So far the only options I have been able to find are VARGAS and ROB BECK both priced around 40k.
Is there anybody running on these Borg Warner's, or something NON RB or VARGAS?

http://www.bimmerboost.com/content.php?4...horsepower

http://www.borgwarner.com