Trilene XL vs Silver Thread AN40

[CouchTater]

Not entirely sure this new board is for fishing nuts and bolts, but I'll throw this Q on the e-waters and see if there are any nibbles.

For an ultralight spinning setup, I want one spool set up for stealth and one for deep/cloudy water. For my stealth spool, two lines which seem to make sense are Trilene XL and Silver Thread AN40. I intend on trying 6 lb to start with. I'm looking for a clear or subdued green line, good casting properties off a spinning reel, good knot strength, etc.

Surprisingly the price for the Silver Thread is close enough to nylon monos, so I don't guess cost is really a factor. Folks seem to either love or hate the Trilene family of lines, and I've only found a few mentions of Silver Thread and then only for Excaliber, not AN40.

What are your experiences with these two lines?