Real nice. I like what you did there. On your chart I really like the 0.6mm at 9spi, 8spi too. I like the 0.8mm at 8spi and 7 isn't. I think I prefer the 1.0mm at 7spi over 8spi.
1.2 looks good at 6 and 7spi
The tines on your 5 and 6 spi irons are really big, eh?
I recently got a few sets of irons that are closer to 6.5, 7.4, 8.3 and 9.25 SPI (3.85mm, 3.38mm, 3.00mm, 2.70mm) I find that the 0.8mm Tiger thread looks good at 3.38mm and 3mm, 0.6 looks good at 3mm. Not sure how I feel about the 2.7mm with 0.6 Tiger thread yet.