in-ceiling speakers

[LOUMFSG]

I am looking for a pair of 6" or 6 1/2" in-ceiling speakers, and see two sets, and can't decide. Any advice:

JBL SP6CII Soundpoint Series 6" 2-Way In-Ceiling Speaker (about $150/pr)

Polk Audio RC60i White Round 6.5" two-way in-ceiling loudspeaker (about $100/pr)

 

[zieglj01]

I pick the Snell
http://www.accessories4less.com/make-a-store/item/SNELLOHT7/SNELL-OH-T7-Full-range-6.5-inch-coax-Direct-Power-waveguide-Each/1.html

 

[02Lightning]

I pick the Snell
SNELL OH-T7 Full-range 6.5-inch coax “Direct Power†waveguide Each | Accessories4less

Funny, never seen a speaker dB rated like that.....
"108 dB output in typical living room"
what is a typical living room?