They are either good for training your micro or they feature something that makes them special. I have included the Gosu-Computer triggered UMS, the Comp-on-steroids UMS, several melee and team melee micro maps, the micro UMS maps that Stimey offers at his site, specific race training maps and other UMS maps that help you improve your Starcraft skills.
The pack is about 2 megabytes. I have weeded out all the less useful maps but I may have missed a few. Ignore what you do not like and enjoy what works for you. You can find a greater description of each UMS at » entropyzero.org but if you download the pack you will have them all. If you have a neat UMS micro map that you want to share, please send me a PM.
You can download the whole pack here » Micro UMS Pack
This time however, he makes mention of a Micro UMS to train terran micro called Bada)MicroControl. The map has been created by Bada)Noel from channel op bada) on Asia server. It is a little bit buggy, so sometimes you need to run it a few times before it runs well but it is another fair map to train your Terran micro. I have included this in the Micro Pack.
You can download it individually here » Terran Bada)MicroControl.
Links
TL.net - Source
Entropyzero.org - Source