Note that the TF100 uses Taylor reagents, so both the TF100 and Taylor K-2006 have all the advantages mentioned below.
The Taylor PH test is better than the other brands. The color standard that you compare to looks more like the sample will look than most of the others and it works over a wider FC range than many of the others. Some people still have some trouble reading it however.
The FAS-DPD chlorine test, in the TF100 and Taylor K-2006, measures FC from 0 to 50+ in steps of 0.5 or 0.2 depending on how you do the test. None of the other chlorine tests even come close to being as versatile.
CYA testing is of course critical. Despite some minor problems, the black dot disappearing CYA test is the most repeatable CYA test available for a plausible price.
The Taylor TA and CH tests are more resistant to interference than the others and work reliably over a wide range.