Ladies, I just sat here (at work, no less) and read this entire thread!
I must say that I too, am a MAC addict! I discovered MAC about a year or so ago - they don't sell it in my area - and from my first purchase, studio stick , I fell in love - HARD!
On Monday, I purchased studio fix (love it love it love it!), Budding Beauty eye shadow (to go with my Humid shadow

) and Beaux lustreglass. My daughter now wants to know why I'm always wearing lipstick or lipgloss to work, and I told her since I've spent so much money on it, I may as well use it! I don't wear makeup on a daily basis, generally just on Sundays, but now I'm wearing something on my lips every day. One thing I like about MAC - although it may be a little more expensive, a little of it goes a long way. It'll take me forever to use all the eyeshadow that I have (only 5 little pots of the stuff).
Here's my situation: although Beaux and Oh Baby are close in color, I thought I'd have to take my foods intravenously because the lipglass was so stickly. I'm also not that thrilled with Oh baby. I ordered it online, and though I have tried to like it, I just don't. So I'm going to return it. My question is, I'm thinking of replacing it with a lip primer. Have any of you used one before, and is it worth it? Does it really help with feathering, or help the lipstick last longer?
Oh yeah - and the Chestnut liner and "O" lipstick? Best thing since apple pie! But after Monday, I'm not buying any more makeup for a long time.