well it's interesting.
so far the 3dfilaments.ie has been the best.
Got a fully working pinboard with some dirt cheap white pla.
Then tried to replicate with more expensive polymaker polyplus.
Lots of stirnging and pins welded into holes - think I need to read the printing temps again for that.

I'll probably try the polyflex next, that usually prints on a cold bed. Then the polycarbonate. And maybe, for a laugh, some abs.

Love to know how it works - the fact that at 29c it just lets go, is fascinating.