I have had my Cannondale both done wet paint and powder coated at the last 3 years, I prefer the powder coated option as it's cheaper and alot durable than wet paint. 3 years ago after getting the frame sprayed wet paint, I was tighten the seatpost clamp and dropped the allen key to bottom frame rear tube and chipped the paint which you can see the bare metal :? and when I stripped the parts off the frame ready for powder coated last year, I took the chain stay decal off and the paint came off with the decal :? It's pretty fragile.
If you are going to use the bike for off road riding, I would go for powder coated so you can relax and enjoy your riding, but if the bike is going to be used on tarmac or be a garage queen then go for wet paint type.
On the finish, I cant see much difference between wet paint and powder coated apart wet paint be more shinny looking close up but not that much, from a distance, you wouldnt be able to tell what paint finish it is.