3 Vs. 6

Looking into Mazda's currently I'm new to them and was wondering what everyone recommends. I definitely want a sedan, not a 5-door. I like the 3's look and mpg. I like how the 6 has a little more kick. I'm looking to buy this summer get something used for 10k-12k. So i just want to know what everyones driving and what they recommend. Please keep answers related to the topic, and owners only. Thank you!