I do not know Calman's products (only from demos), I have learned with HCFR + i1displayLT. Then I bough chromapure + i1display3.
You know, best photographer's friend is trash and your best friend will be articles like well known Kal's article http://www.curtpalme.com/forum/viewtopic.php?t=10457
. I believe it is not important if Chromapure or Calman - it is personal preference, but reading and learning and then trying. And then again.
It is joy and fun and benefit is, you will learn a lot about your TV. Do not think, your first calibration will be perfect (although numbers and graphs will be perfect), but then, after lots of reading and asking here in calibration forum you will love your set.
If I put Return To Forever to my Oppo, not only fantastic sound to my Denon's headphones (and Graham Slee headamp) but best possible picture I can imagine. So investment to meter and software is well worth of every cent, at least for me.
And at last , because we are here in Spears & Munsil disc, you need to set equipment for best combination of rgb's, 4:4:4, pure directs and other hard to understand settings. Nothing is better and I got it free with my Oppo
Panasonic TX-P42GT50E, Oppo 103, Schiit Vali, Denon AHD2000 + Moon Audio Blue Dragon V3, Phonak Audeo 121, Vsonic GR07, Fiio E17, Cowon S9, XLO cables :: CalMAN 5 Enthusiast,Chromapure Standard, i1D3, i1Display 2, TED's Calibration Blu Ray Disc v1.0 & v1.1