Here's some swatch comparisons if you guys were interested! I got my lippies today!
on my arm(from right to left):
guerlain flirte
chanel fascinante
chanel precieuse
dior bellissima
mac glam
mac ronnie red (above)
nars future red
mac just a bite
mac riri woo
+ a glimpse of Mac Hoop (in certain lightings it seems a bright pink, other times more subdued and soft)
same list, except going down arm, so Guerlain Flirte down to Mac Riri Woo.
I love the formulation of glam, it's a nice sort of soft satin feel, and like Temptalia suggested, Chanel Precieuse is similar (but more red, while Glam is a slightly deeper strawberry). Mac Ronnie red is very similar on me, pink based, but also darker.
As you can probably tell, I have a penchant for reds!