Chastity and orgasm denial discussion

Hello dear chastity enthusiasts, I’m getting ready to relocate, and while I’ve been clearing out stuff I don’t need, I suddenly realize I have the right mindset to seriously consider purchasing my first Chastity device. My Domina encouraged me to do some research tonight since I’ve been a bit quiet about chastity lately. Also, last night I got carried away and climaxed before my scheduled 11-12 PM window, so it seems like my period of honor might be wrapping up… The questions I have are probably old news here at the forum, but why not ask again! If the price is identical for both models, what makes a case for choosing the 3000 over the 6000? Is one naturally better suited for smaller penises like mine? Which option offers more comfort versus challenge or frustration? I hope members who have worn both can shed some light and help me make a smart choice! Thanks heaps, nikki