Actually I usually shift around 2000K or even just under if I'm not really accelerating. If its just a slow and gradual building up of speed, I shift very low. If its normal driving I shift between 2-3K. The only time I shift higher is when I'm handing someone their ass

I've got a 98 SVT.
Usually if I'm cruising on an open road, I drive in 5th even if its like 35mph. No need to be in 4th. I see any additional revs as wear and tear on the moving parts. Even though I run synthetic, I try and baby the car somewhat. Its got about 140,000 miles on it right now.