This question already has an answer here:

Depending on the word, using an before a consonant is not right.

What about in this phrase, "David has just gotten an SX250". To me, it does sound a lot better than "David has just gotten a SX250".

I saw a similar phrase in a book the other day, and it did not sound/look right at all!

Don't know if I'm going crazy or what..

merged by RegDwigнt Mar 21 '14 at 14:08

This question was merged with Is it “a SSD” or “an SSD”? [duplicate] because it is an exact duplicate of that question.

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