Brooks Glycerin 10 or 11?

Since hubby just landed himself a job (after being unemployed for 10 months) i plan on treating myself to a new pair of running shoes. i currently wear brooks glycerin 9s which I LOVE. question should i buy the 10s or just jump to the 11s? I don't plan on switching to a different brand one because I LOVE MY BROOKS, two i wear a size 5 and three i have wide feet so fitting is time consuming and sadly a chore (unfortunately shoe shopping is not fun for this girl).

sooo.... to those who wear brooks glycerin would you upgrade to the 10s or the 11s. not concerned with the difference in money.