8 inch converter questions...

When I talked to Dynamic the other day, I was contemplating between their 9.5" and their 8". What they had claimed was that my car might be 1.5 to 2 tenths faster in the quarter but would probably run AT LEAST a few hundred rpm higher on the highway. They were unsure as to how much higher though. I guess it all depends on what you're wanting to do. They also claimed that their 9.5" would be 3 tenths faster than any other 4000 stall 10" converter out there. Is that true? I don't have any idea. Do you want the fastest converter you can put in the car? 8" is your converter but if you're running around town, make sure you have a decent trans oil cooler. I didn't want my car screaming at 60 mph so I went with the 9.5". It should run right around 3000 rpm at 60 based on another member's identical setup. I didn't see that the extra $300 for the 8" was worth it for what I'm doing with the car. But for you, it may be totally worth it.