Listening to speakers in Best Buy is not a good way to pick a speaker. The ELAC B6.2 would be a great option for a 2 channel system. It's a fairly neutral speaker with a better low end than most other bookshelf speakers in this price range. Best of all, you can try a pair risk free in your own home when you buy from Best Buy. I would definitely give those a shot first.
The Polk S20 is also a very nice 2 channel speaker to look at.
Subs>RBH I-12e, I-12. HSU VTF-15H mk2. Monolith THX 12(x2), THX 10(x2). XTZ 1X12. SVS PB-1000(x2). Speakers>JBL Studio 270/235c/230/225c, Arena 130/125c. Sony CS3/CS8/CS5. QA 3020i/3090Ci, 2020i/2000c. Monolith Cinema 5bs. Polk RTiA1/CSiA4. Other Audio>Sony MDR-Z7m2, MDR-V6, XB900n, XB700, XB32, XB31. Sennheiser HD58X, HD4.50, PC37X. Philips SHP9500. SIVGA SV004. HyperX Cloud PS4. TB Stealth300. LG FH6,RK8,RK7,PK5. HK Onyx Studio4(x2).