I have a Bayer/Ascension Contour NEXT EZ meter. Basic, simple to use. Starter kit is $20 at the drug store, $9 at ADW. I can usually find 100 test strips on Amazon for $20-$25.
If you are concerned about ketones, and don't want to try to test urine samples, you could get a meter that measures both glucose and ketones. The Keto-Mojo I bought was $60 for the starter kit, $1 each for the ketone strips, and glucose strips are $30 for 100. Good documentation, videos and other information on their web site, very nice customer support.