The Taylor K-2006 is the test kit we recommend for everyone here. It has a FAS-DPD test for Free Chlorine and Combined Chlorine. FAS-DPD is far eaisier to read than any color match and can measure much higher chlorine levels. As you'll be taking care of three pools, I recommend you get the K-2006C kit, It has 2oz reagent bottles as opposed to the 3/4oz on the K-2006. This test kit is generally unavailable locally, you'll have to order it online. The moderators on this site have links in thier signatures for buying these kits.

Don't scrap the other kit, OTO can be very usefull for every day testing and for special circumstnces.