@Gene Regan Welcome to BP, it is a great resource and I am sure you will feel the same way after using it for a bit.
Milwaukee is a great place to invest as I am a transplant to the area from Chicago several years ago now. There is lots of reading material on the very high CAP rates that can be obtained here. While that is very true, those also come with a lot of baggage as well and usually are very high touch properties. On average, if you are looking to invest in a stable part of the market, you should expect between a 6 - 7.5 CAP rate.
Lots of exciting stuff around the city with a new Bucks arena being built, the new Northwestern Mutual building, the couture (http://www.thecouturemilwaukee.com/), and then of course the whole Foxconn deal that is taking place south of the city that is expecting to bring 13000 jobs within 5 years.
Again, its a great place to invest and if I can be of assistance in any way, please do not hesitate to reach out.
Tyler