Choosing between floorstanding speakers.

I prefer the 802's over the other options.  I have owned the 600 series and the CM10's.  At the end of the day your ears will have to guide you.

Woots

I have a pair of full size floorstander Martin Logan Motion XT60’s , very good finish and plenty of bass if you choose.  I like them because the midrange/treble response is excellent with a 6.5 “ midrange driver and ML’s excellent version of the HIEL folded accordian style tweeter . Very detailed and able to decipher higher volumes without becoming harsh . I have my Yamaha S-2100 hi end integrated amp treble set at neutral, the midrange /treble response is that good . A slight boost in my bass control , sometimes back to neutral. The XT-60’s are impressive, both in sound and finish. They make smaller floorstanders plus stand mounted monitors in ML’s Motion series . 

Klipsh RP-8000F two tower speakers plus one subwoofer:  $1,551

Polk Audio T30 center channel speaker:  $99

Fosi Audio T20 50 Watts RMS per channel Bluetooth stereo tube power amplifier:  $85.99

Semoic Audio 6J1 tube stereo preamplifier:  $14.64

Total on A-zon $1,750.65 plus tax, delivered 

@victorjs  -  Considering your primary use is for HT movie watching, I would stick with the old advice that says you should have all speakers voiced the same. To me, that would mean stick with the CM series, as your rear speakers and center channel are from that series. Getting your 5 speakers (Fronts, rears/surrounds and center) to be voiced the same would be a good goal. Are your center and surround S2 models in the CM series?

If your primary goal was 2-channel audio, I might offer different advice. But considering you are primarily HT, keeping all speakers voice the same should be a focus.

I will agree with reubent, probably better to stick with your CM series since you seem to be a home theater aficionado. My Martin Logan recommendation was coming too much from the 2 channel music side , my home turf .