So, I ended up ordering the mono print (again) in the GM. I'm a creature of habit. What can I say?
Although I LOVE the DE print on everyone else, I'm not sure if I love it on myself. Whenever I'd try the MM on in the store it seemed to be a bit small. I'm 5'7 and generally like larger bags. I don't want to use the Neverfull as my everyday bag (since I just got the Totally) so I think that it will be nice to have something in a larger size. Someone else commented that you can't make the MM larger but you can make the GM look smaller by cinching it & I def agree. I hope that I still feel the same way when it comes in the mail. I will try it on at home & figured that I can always return/exchange at that point if needed be. (I also think it's sad that I'm mainly buying the NF now so that I don't have to pay more after a price increase but I think it's such a staple piece & hopefully I won't be regretting this purchase).
I wanted to thank you all for your input. It definitely helped! I am new to the forum & love the sense of community here. I don't have too many friends that understand or share my obsession with LV or handbags in general. Thanks again!