Peterson
HPC
Majestic
Southord
Southern Specialties

Please keep in mind that this is merely my personal opinion, and subject to debate as there is room for personal preference here, and that you can not go wrong with any of these brands! All pass the test of picking, and at least meet expected quality assurance. My review is based entirely on my own personal use of each set, and my personal preferences.
I've used each of these pick sets a lot, accept the Southern Specialty picks I just got a week ago. I bought a small and medium hook from SS just to test out.
Here is a close up of the pick blades...

Before I tried Peterson, HPC was my favorite brand. The quality is there, and IMHO they have a superior pick design over Southord in regards to the pick blades size. It simple fits in more key ways easier. Next would come Majestic, although the quality of the handles are not as good as HPC, good enough, and the blades are very similar to HPC!
Then I got a set of Peterson specialty picks. These are different then earlier Peterson picks, and come with smaller handles with a texture rubber grip handle. Also IMHO the are even better then HPC in blade design! I was 100% pleased with Peterson. The quality is certainly there! Comfort is also there, these picks feel GREAT in your hands, and produce the best pick *feel* for me of all these sets! By pick feel I mean the ability to feel what's happening inside the lock.
OK, those are my favorites, but this does not mean that Southord and Southern Specialties are bad! Not at all.
First my only objections to these picks is the pick blade is larger and therefore restricts movement in some key ways which reduces pick feel for me.
I like Southern Specialities handles! And you can't beat Southords blades for flexibility! You can bend a Southord pick 90 degrees and bend it back and still be able to use. Still given a choice between these two brands I would choose Southern Specialties over Southord. The reasons being, better feel and design.
Which is Best Buy?
What set should a complete beginner buy?
I recommend the starter kit from Southern Specialties for $10!
This would be a great set for a beginner to buy to test the waters with!
Serious amateurs and pros should definitely consider Peterson! Yes, they cost more. So why not just buy one pick first, just to try it out? If you like it then buy a complete set and you will also have a extra pick too. That's how I tested Southern Specialties out, I bought a couple of picks to try out.
I read some where some one had a Peterson set the got rusted. I don't doubt it could happen, but mine have not rusted, and I'm pretty sure you can get replacements if they do! Peterson uses only the highest grade steel. Their cheap set is equal to other brand's BEST! They also have specialized picks you won't find with other brands.
I don't want any one to think I'm trashing any brand, I'm not. These are my favorites in order.
1. Peterson
2. HPC
3. Majestic
4. Southern Specialties
5. Southord
Please feel free to comment about your favorite, and why you like them.
Thanks for reading, happy picking!