What's the best artificial tears for dry eyes?

Artificial tears. Refresh optive and systane ultra are both good products although there are a lot of good options.
Dry eyes! Start with artificial tears routinely (one drop 4 times a day every day), oral omega-3's, and warm compresses. Next, medicated drops (restasis, mild steroid drops, NSAID drops) or punctal occlusion may be helpful.