I have tried just about every gun around and ended up with the Fuji Q4 and and I love it! The Wagner does the job but the over-spray is a little too much for me. If you are doing 1-2 prints at a time it will do fine (the over-spray does not have time to build up), if you are running 20-30 at a time, you will be in a cloud and everything will be covered in a fine mist. (which is why I changed to the Q4)
As for dilution, I tried the timeless and did not like it, I cut the GlamorII with 50% water and it is perfect...the finish that I get on the prints is perfect every time and it is not that heavy coat that you see a lot of prints have.