Posted By:
RayBAs far as switching goes; get it clear in your mind right now and don't second guess yourself. PSA and SGC are both viable entities with their individual strengths and weaknesses.
Your choices are:
1. Keep at building it PSA
2. Build a mixed set (doesn't sound like an option based on your statements above)
3. Divest and start anew with SGC. (Will only set you back and cost you the time invested thus far).
4. Cross everything regardless of the grade to SGC (added expense; especially on lower grade cards.
I faced this very same dilemma when I was about 100 PSA cards into the set. At the end of the day I just got it clear in my mind that there was no turning the ship around and got content with that.
At some point you may look to build other prewar sets or add other prewar individual cards to your collection and you can keep SGC's strengths in mind when those opportunites arise. I've done that too. I'm currently working on a R312 30's Premium Oversized set and I am using SGC exclusively for that even though my T206's are PSA.
Good luck with whatever you decide and remember always to consider how you will have the most fun.
RayB