While I'm on the subject, which tests do you find the most conclusive?
The best by far is the DPD-FAS chlorine test. My least favorite is the CYA. My second least favorite is the PH tests, whether it's liquid or by test strip. I find it somewhat difficult distinguishing the shades of orange and pink sometimes.
The Taylor or TF Total Alkalinity and CH tests are pretty cut and dry for me.
This last Saturday, I bought an inexpensive 50-pack of HTH Test Strips which test for FC, TC, TA, CYA and PH. I think I prefer reading the CYA on this to my Taylor kit, and the two numbers do agree with each other. The chlorine readings seem to be pretty accurate too. If you want to do 6-tests in 15 seconds, these test-strips really aren't bad to have.
Having some experience with the liquid kits, I can read the test strips pretty accurately. For a cheap, everyday test when things are normal with your pool, they aren't too bad.
BTW, I paid $12 for what you can get on eBay for $7.99