Which ones? Funny is, we're famous for best vodkas, yet a lot of Poles think it's fancy to bring an import to the party - Finlandia is very popular around here.
I don't know how it should be in a martini, cause I drink it mostly raw. I mean, now I know, after reading your post :) I like the part "Bond was breaking etiquette to show off how big his balls" although I think it's a bit funny for most of eastern-europeans ;)
4. A home-brewed vodka from a Ukrainian friend's still near Moscow.
5. Snow Queen (Kazakhstan)
I can't believe that poles of all people would drink Finlandia when there's things like Potocki around. Mind you, in the UK we have amazing ales and people drink things like Stella Artois and Carling.
Żubrówka and Wyborowa are very popular (first choice list), Potocki is more of an export product, and as I see the price it's about 3x more than Absolut or Finlandia and 4x Wyborowa, so it explains a lot. Near the Potocki price tag, Belvedere seems to be more known, but here I speak for myself, I'm from Warsaw and Belvedere is from Żyrardów (about 40km) while Potocki is from another region, maybe that's why I know this brand better, don't know, I drink a lot but to be honest I'm not a vodka expert.
About drinking Finlandia, Absolut etc. in PL, I think one thing is the price placement - it's a bit more expensive than popular local vodkas yet not too expensive as premium brands, second thing is the 'imported' factor, as in your beer example - people like import stuff even if sometimes local is desired abroad.
Oh, I love to drink an ale sometimes :) Most of Polish beer is crap so in this subject I don't have to be ashamed of drinking imports :)
I'd avoid going over 55% on the vodka, the goal is to make it present but not to overpower the gin and vermouth.