I just tested a pair of the Twinmos w/Winbond $76 sticks, and like all good ram from good companies,
it is rated on the conservative side. It easily ran 200MHs fsb 6-2-2-2, which is better than the CAS 2.5 it's rated at.
But CAS 2.0 performance is not all that important.
Epox 8RDA+ with dual channel, Twinmos w/Winbond, and XP1700+ at 200MHz x 10 (6-2-2-2) scored Sandra memory 3095/2904.
Newegg Samsung True PC2700 in same system, 205x10 (6-3-3-2.5) scored Sandra 3159/2897.
I was able to hit 11004 in 3dm2k1se with this memory, while Samsung PC2700 only hit 10975. Less than 1% boost.
Point is, it may not be worth the extra cash to get the best sticks if performance gains are only slight.
Had a pair of Corsair PC3500XMS last week, and they performed about the same as these Twinmos sticks.
Will be testing the Twinmos w/Twinmos next week.