I can't comment on the DDR2 PNY RAM but I can how ever comment on DDR PNY RAM. I have used ~10 DIMMs from PNY and 2 or 3 of those DIMMs had Memtest86+ issues. I recommend Corsair, G.Skill, Patriot, Crucial.
The OP is referring to SODIMMs. PNY isn't the best, but it's not the worst -- just average (and often sold in bricks-and-mortar stores at expensive prices).