I like the idea of test driving both kinds of the knitpicks. I test drove the options before I bought them. Then I saved for the set (got them as a gift before I could save). I would say get them in your favorite/most used needle size so that if you pick one of them you will have more of that size.
Recent FO:Damask just needs a handle and some waxed cording.
3 pair of clogs
OTN: Wonderful Wallaby for dd(on hold)
Pigeldy done but needs to be seamed and felted
Thorne market bag
Clogs (to replace shawls)
In line to be cast on:Clogs (2 more pair)
scarf for ds
cat scarf for ds#2
2 booga bags