Hi Steve. I was much like you, when it came to making up my mind. I would swing between Titan plate diff, and Quaife ATB diff.
Ask 10 people, and you'll get 10 different opinions.
The thing that made my mind up was a convesation with Richard Lee (Bless him ☹️) , as we where talking about our ridiculously overpowered Seven projects.
He'd had a conversation with Russell Savory, I believe, and Russell was fitting the Quaife diffs into the Levante. A customer had specified a Titan diff, but when Russell tried it out in the car, the car was uncontrolable when the plate diff locked up completely. Apparently, he drove the car back, and swapped it straight back to a Quaife.
What is fact, is, a Quaife ATB doesn't like kerb hopping.
It is gentler, and wont lock as aggressively as a plate type diff.
If my car was a track/hilclimb/sprint/competition/had less power car, I'd have gone for the Titan.
As it'll be 99.9% road use, I chose the Quaife. I must add, Quaife where a pleasure to deal with.
People from the Titan camp have said to me, I'm happy spinning what power I have away with the Quaife. All I can say to that is, I intend to set the car up correctly, and I have control over my right foot.
Having owned lots of very quick motorcycles over the years, I'm no stranger to high power to weight ratio's.
JMHO of course.
Edited to add, the complete unit, in a brand new "Ford" case was £1,271.84p of which £62 + vat was delivery to here. (Compare that to the price of an open diff from CC )
Edited by - Mickrick on 18 Dec 2009 08:16:22