New Obsession- Nail Polish

There are two main reason why I have started hoarding nail polish.

1) Pinterest

2) Couponing

Oh, Pinterest, you and your plethora of pics of perfectly pristine polishes on yet-to-be-discovered hand models who happen to blog.  I can't help but want all the pretty colors.

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And coupons, seriously, I get five makeup coupons per week.  I am not a huge makeup junkie-- I stick with the basics-- and I don't want to buy a mascara a week even if it IS a steal.  So I've been buying nail polish because it's a darn good investment (right?) and I've been painting my nails a new shade pretty much every other day.

I stick with drugstore brands (mainly Revlon, Sally Hansen, and Rimmel) because them faaancy brands be too spensive, and no coupons obviously.  Plus, of the Essie polishes I've bought in the past, my polish chipped within a day.  I wish I had something bad to say about OPI, but alas, I don't.  I just can't bring myself to cough up the dough  They have some beautiful colors-- I especially love the one above.  I found a similar color from Sally Hansen-- Forbidden Fudge.  If they still make it, I'm definitely going to pick one up.

Some of my most recent purchases:

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Rimmel Lasting Finish Pro in Violet Metal
a metallic purple with blue tones

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Sally Hansen Xtreme Wear in Rockstar Pink 
(looks great on top of Violet Metal)
a pink glitter polish with blue and gold

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Rimmel Lasting Finish Pro Steel Grey
very neutral taupe, not quite gray, not quite brown

Sally Hansen Crackle Topcoat in Cherry Smash

tried it over silver (you know, for school spirit days) and it looks cool
basic red crackle topcoat, color is a bit light but a thick coat looks nice

So tell me:
What are your favorite nail polish shades?