Sigh, my SA just recently asked me which bag I'd like next, another B25 in Noir PHW, or something else. I told her since I already have a B25 Gris Meyer PHW, I'll go with the B30 this time. I don't know know if I'll regret it because the B25 is already very spacey for me. (I can fit all my essentials into my MKII) Also, the B30 is so freaking heavy by itself and I'd be scared to carry anything inside. But, that's the "standard size" and I feel that I should have one. FOMO, I guess. Do I really need another B25? Probably not. I have decided that my next bag will be a Birkin and my collection will be pretty much complete.
Any input/ criticism would be appreciated.

For reference, I'm 5'6 and 123 lbs.