littman has been, and will always be a great choice.
welch-allyn, heine, drg, baum, there are several other good brands, some with bells, some with diaphrams, some with both, some tuneable etc.
I've got two issues, one is that they tend to have feet, so unless you really are careful, it might take a walk. Second, is that most people never can hear the nuances that the manufacturers say that you can. Maybe its just me, but I think that at that price range there is very little difference.
If they are planning on big bucks (4-500) and you really want something cool, littman has a line of electronic ones that will amaze you. and you can make recordings and stuff, playback in slo-mo, probably listen thru walls if you wanted too. pretty cool technology.
fish
Oh, get it engraved. those little plastic tags suck.