Blogs tend to rate higher in terms of Search Engine Optimisation, but only if they are updated regularly with relevant information. There's nothing worse than a blog, or news section that was last updated 3 years ago, it says "I don't care".
So, if you can afford the time to update it regularly, go for it. If not, don't touch them. I have guides on my site which are similar, and one particular guide is the highest entry page on my site with the exception of the index. This is because many people search for the subject on google and few sites seem to address it.
Kris
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