HVL-F58AM Compatability

[jcray19]

Hi all,
I'm new to the site as you can tell. I have owned my Sony a-100k since just before Christmas last year. I love the camera, as it does well for my needs. I haven't purchased a flash yet, mainly because of cost. But, that being said I think it is now time to get one (before the holiday picture rampage). I am considering getting the HVL-F58AM, the 42 or I may opt to go for the Sigma EF-530 DG Super. I don't really need anything really fancy, just something that will not be a waste of my money. Again, I do not take pictures to sell them, just mainly of friends, family and of course vacations.

I have done a good bit of research and have kind of narrowed it down to these three options. I am open to suggestion because, like I said, I do not want to waste money.

My biggest question is, will the 58 work with my a-100?
Because, if you read the compatibility chart on Sony Style it lists just about every alpha camera except the a-100.

Any help would be appreciated.

Chris