CDS might not be detailed enough for you, it is primarily for company sized games, although platoon sized ones would work too. Force on Force + Ambush Valley are the opposite, great for platoon games, but struggle a bit as you approach company size. Both are excellent rule sets in their own area though.
If you are looking at small games, I'd suggest FNG, as mentioned in the other thread here. I don't have the 'Second Tour' set yet, but the first one was good. The basic core rules 'Chain Reaction' are available from Two Hour Wargames as a free download, so you can see if you like the basic concepts. The original set had a campaign system and other bells and whistles and looked like an easy route into playing solo too.