If you were gonna buy a merc, which one?

I'll narrow it down bit more. I want to buy a pcgs graded mercury dime (yes the winged head of liberty) and I aonly want to spend around 30-40 bucks. What year and grade should I shoot for? Any input will be appreciated. (Assume you are talking to someone who knows nothing and you won't be far off.)
"It's not that the Irish are cynical. It's simply that they have a wonderful lack of respect for everything and everybody." - Brendan Behan
Proud Participant in Operation "Stone Holey" August 7, 2008
Proud Participant in Operation "Stone Holey" August 7, 2008
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President, Racine Numismatic Society 2013-2014; Variety Resource Dimes; See 6/8/12 CDN for my article on Winged Liberty Dimes; Ebay
You have 3 ours and 19 minutes to bid on THIS ONE.
Or you could get a 65FB for $40 or so.
Proud Participant in Operation "Stone Holey" August 7, 2008
<< <i>If you were gonna buy a merc, which one? >>
50 Model with a chopped top, nosed, decked and slammed - no bags!
My #1 Low Ball Peace Dollar Set
Proud Participant in Operation "Stone Holey" August 7, 2008
That's just MHO.
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