To be honest, I am not sure what the difference is between those two. I purchased the one they have specific for Resin...as seen here (C.A. Technologies Resin (Mold) Casting Pressure Pots) for $294.19. I love it. I did develop a tutorial on the adjustments you need to do once you get the pot, so if you end up purchasing it and want to see it, let me know and I will send it to you.
Kevin
PS...i think the one I purchased is in your second photo, at least they appear the same.
I had the HF pot and am so glad that I went the extra $$$ for the CA Technologies quality.
I've been looking at these two for myself. Much larger pot for not much more $