I use quite a few and contrast and compare them. eBay and Amazon are good but going direct I use matchman supplies, Tacklesaver and Ted Carter.
I like to look at them all, observe all the neat bits of tackle, rigs and hooks etc which I have seen used in the mags. I usually decide I don't really need them, probably won't use them, have them already in another form, and then buy them! I must have every conceivable type of float adaptors and will never use them all but I enjoy looking at the differences and trying them. Each set has cost less than a pint so I don't mind; it is all part of the fun and helps me relax.
It can be enjoyable being slightly crackers!!!:wh