TC-DC58 vs. TC-DC58N

Is it true that these are two different models? They are often confused on vendors' web sites (the same Canon part number - 8159A001AA - is used for both a lot).

My understanding:

TC-DC58N - 1.75x

TC-DC58 - 1.5x

Is that correct?

Also, does anyone have a vendor they would recommend where it (TC-DC58N) can be had for around $100?

Dana

P.S. New G3 arriving on Friday - I am SO excited!

Well, I think I've answered my own question....found the Canon Accessory Annex on their site, and confirmed the following:

G3: TC-DC58N - Canon part #8159A001AA - 1.75x

G1 & G2: TC-DC58 - Canon part #5743A001AA - 1.5x

Thanks,

Dana