all are very nice speakers in that list if you ask me, but why post some of those then say "under 200$"?
if thats true, say goodbye to MB quart, boston and focal, 6.5 components will be more than that for them. polks are okay but i usually look to polk when i want a quality pair of cheap speakers, not when im looking for my mail component set (not knocking them, just saying im not impressed by their top lines, but their lower lines are very competetive for price).
i personally am a fan of the infinity reference series, and a 6.5 set would fit in your budget. crystal is also very good and will fit your price too if you shop around.