If you are "printing" a lot (showing through clothes), even after adjusting the holster, you may want to consider another form of carry. Body type and general build are factors that affect your ability to carry in a shoulder rig.
Shoulder holsters are notoriously difficult to draw from in an intense situation, and most make retention during a confrontation problematic, as the way the pistol is situated makes it easier for your opponent to reach it than for you. Training and practice is highly recommended prior to wearing a shoulder rig. Weapons retention is not something that should be considered lightly.
That being said, I also recommend Galco and DeSantis rigs, if you still prefer a shoulder rig. I had what became known as a "Miami Classic" back when Galco was still called Jackass! Though the price may be more than what you were originally considering to pay, the quality is lightyears beyond Uncle Mike's. Uncle Mike's is an innovator in design and materials, but I would suggest that they are "entry-level" when it comes to carrying something that your life may depend on.
As always, Your Mileage May Vary (YMMV). Choose what YOU feel comfortable with, as the weapon you left at home because it wasn't comfortable to wear isn't going to be doing you much good, should you happen to need it.