Hi there!
I found the Stands Unique didn't work quite as well with my Clearaudio Revolution - seemed to have more of a treble sheen compared to the Target with thick maple shelf, in other words it seemed more natural on the Target, though you have to take this with a pinch of salt as I only tried the Stands shelf at a mates house with my speakers being the only other common thing.
I've no idea how either would work with an LP12, what with that being sprung and the Clearaudio just heavy acrylic - many Linn owners swear by Mana so perhaps glass is the way to go with one!
The good thing about the Target is that it was given to me, and the maple was also effectively free as it was the cut-out from a hob in a kitchen worktop...
And not only that, it matches my Finite Element rack nicely.