Polo = baggier fit in body, but made for guys with small arms
Lacoste = trimmer fit although arms fit better
To me, quality is similar although I agree each have pros and cons.
I prefer Prada sport and Tom Ford to both, mainly for the cut, although I have a few Lacoste "vintage" t-shirts that came out last year that I like much better than the regular Lacoste shirts. RLPL shirts are very conservatively cut although Black Label makes some nice t-shirts (although seem...