I agree that the TMC 2488 with the straight eye is a great hook for very
small flies, particularly midge pupae, etc.,as well as for actual scuds.
I like the TMC 2457 for serendipities, though, and the lighter 2487
for parachute-style emergers, because I find it easier to thread the
tippet through the eye if the eye is curved down and away from the spun
hair head or the horizontally wound hackle.

JR