Which is better Graco or Titan?

The winner here is Graco, at least with the two sprayers I own. Performance wise, the Contractor and RX-80 spray guns by both companies are great, but the filters in the gun and manifold of my Graco sprayers are a lot faster to disassemble and clean than Titan.

What tip do you use for an airless sprayer?

Choose a tip with an orifice size rated for the paint or coating you’ll be spraying. Light coatings such as lacquers, stains, and enamels require a small tip, while heavier coatings such as texture require larger spray tips.