I've had issues with font sizes not being consistent when using sIFR though. Also there's a slight delay sometimes before you see the actual font displayed. I haven't had the chance to test sIFR Lite yet, but I'd probably give Cufon or Typekit a go before going down the sIFR route.
You have several options (as outlined above) but to make a decision you need to consider a few things:
a) are the fonts licensed for use on the web?
b) will the type need rendering on the fly (i.e. will the type be dynamic, or will it never change)
c) how frequently will it appear, disregarding the above point.
The reasons I ask are
a) the font needs to be licensed for use up on't web. If not then you can't use @font-face and some others
b) if it is dynamic text, this rules out CSS image replacement
c) if it appears just once per page then it seems pointless bringing in all the overheads that come with sIFR etc when you can use a simple image replacement with CSS.