For hunting, definately the .029 pins. They are larger, gather more light and are easier to see earlier in the morning and later in the evening. If you want to get fancy, you can get the top 3 in .029 and the bottom two with .019. This will give you all the light gathering you need for early and late shots, with the benefit of the smaller fibers for your long yardage pins.......which you probably wouldn't be shooting with in low light conditions anyway.

As for which sight, I own one of each. The Real Seal is a fine hunting sight. The micro adjustment allows very precice gang adjustment of the entire sight housing. It will provide you with years of dependable service and is darn near bulletproof.
The Hoggit or Hunter Hoggit are certainly the next step up. The main thing these give you is the ability to adjust your 3rd axis. This adjustment will ensure that your level is correct for up and down hill shots (IMHO it is well worth it!)

All of Spot Hoggs pins adjust the same way and are some of the best in the business.

If it were me, looking for a hunting sight, I don't think you can do better than a Hunter Hoggit. If that is just a bit on the pricey side for you, then the Real deal is a great fallback.