Here's my 2 cents:
For all the pestering of Keith Lockliear and Aaron Stewart I have done over the past ten months with this turbo, I feel I owe them this:
I bought one of the very first offerings, before some grenaded and sales were suspended. If you're interested, see my profile for bombs.
I put over 20k miles on the 1st gen. offering. Keith and Aaron convinced me to hang in there..... I was worried it would grenade like some other's, even though most of them were 3rd. gen trucks. I decided to wait it out for the revised model, and was repeatedly reassured by both Keith and Aaron that I could expect a free replacement when the revised model was released, or get a full refund if I didn't want to wait. It replaced a Dodgezilla hybrid 12cm. Thought spool was just a little slower than the DZ but smoke control, egt. reduction and top end were so much better. I was tired of seeing my egt's. hit 1500+ so quickly.
I replaced the 1st gen. with the new model in mid December, and have over 5k miles on it.
The new one spools even better. (I had the first PDR Nasty Nine, modified HY 35, so I think I know what quick spool is)
On level 5x5, I have not exceeded 1400, and I'm at ~90 mph when I get there. Very slow and steady rise. Level 3x1..... haven't gone over 1250.
I usually drive on level 3x1 everyday if pavement is dry. Marco's catcher too wicked for wet sufaces..... have to turn down to level 1x1.
Smoke off boost on level 3 is hardly worth mentioning... . clean pipe at 10 lbs. of boost. (I'm at ~200 ft. above sea level). Level's 4 and 5 are heavier, but clean up very quickly. I do not like smoke! ..... causes road rage with the snail darters. No smoke complaints.
Maximum boost hasn't gone over 40 psi.
Street manners are excellent... . no surge, never. I did bark it once, but I deserved it.
This turbo, for me, meets all of my needs and is a perfect match for my bombs. I haven't dynoed for almost two years, so I don't know where I'm at, and frankly don't care. I came close to burning out trying to dial my truck in to what I wanted. If your bombs are close to mine, you might like this turbo.