Speaking for Taylor...
As life happened, I got a Taylor K-2006 test kit before I knew about the one offered through this site's member.
I love my Taylor kit. It is pretty blue and compact. It is roughly the same price as the TF-100. It comes with a water balancing wheel and a waterproof booklet that I often refer to.
Yes, at first I was shocked at having to shell out so much money; thank heavens there was no tax or shipping charges. But I have come to look at it as not only a very, very necessary and sophisticated tool, but also I also consider it to have a bonus of being quite an inexpensive little hobby. I love to test my water. I probably test it too often. It's a great toy for a grown up.
I also like that the Taylor reagent bottles all have their lot numbers on them. I can phone Taylor three or four times a year, immediately speak with a human being, who is happy to take down all of my lot numbers and then tell me which reagent are "Fresh", which are "Usable", and I suppose they'd tell me which are out of date, should that ever happen. I reorder my reagents directly from Taylor rather than buy them at the pool store. The website takes credit cards now, and I know the bottles will be fresh.
I have come to be slightly disappointed in my test strips that I have for borates and phosphates, as they are only strips and not very accurate. I cannot imagine testing my water with strips for the important factors such as chlorine, pH, TA, and CH....(I'm guessing there's no strips for CYA).
Lana