I agree with you, and I follow without understanding this lack of information.
for example, in webs of leaf, when you want download an sample raw image, in leaf A65 , of the 2 that there is, one is is moved and other badly exposed and displays noise in the shades. In it phase single is possible to see a sample of the 25...
I believe that we deserve ourselves as you say one more a more open information.
If you are serious about going to a medium format back, any raw or processed sample will not tell you what you need to know.
In fact I don't know why the makers even post raws because shooting in your style or genre will be much different.
Also and I stress this, it takes time to learn these cameras, even the Canons. Going from a 1ds to a 1ds2 is a way different file and look.
Same with comparing a Phase or a leaf.
What is more important is the workflow. For me I regularly shoot 50 to 65 gigs a day so a three day shoot is a lot of files to edit, name, organize and make web galleries and in the case of Leaf there is about 5 ways to do this.
Just sitting down with one 2 hour session shooting 25 files will not give you a fair representation of how the workflow's can be best suited for you.
One of the reasons Leaf has a help line with a real person is to guide you through this. That is also a reason to chose a good dealer that will also offer tech advice.
Phase also has some very good dealers that will stand by you through the process.
Actually since Leaf and the dealers offer so much service the perceived high price of a mfdb is really quite reasonable.
There is a lot of ways to look at a digital camer purchase. In the dslrs it seems most people move up every 18 months or 2 years to a complete new system.
With the mfdb's they really can be 3 to 5 year cameras maybe more.
I should add that I am a big fan of Leaf and have never tested a Leaf, vs. the Phase, vs. the Imacon.
I have shot the A-22 next to the D2x, 1ds and 1ds2 for my own comparisions.
I have found Leaf, especially Yair, is the most responsive company I have dealt with in my career and at unless something drastic changes in our industry, do not know why I woiuld consider switching brands.
My next purchase will be an A-65 to backup the A-22 and for higher iso.
Even if Canon came out with a $10,000 medium format camera tomorrow, I still would go with the Leaf because I can keep eveything using one camera system, oen set of lenses and one workflow.
I can't stress enough how important workflow is.
If I shoot non tethered, I use I-view to rename and edit the files. The Aptus produces a small Tiff and I-view and photo mechanic reads it. Its not large enough for critical judements like focus but it is large enough to do a quite edit, rename and sort.
I then make jpegs for web galleries in two ways.
If the files are dead on and need no adjustment I put the .mos files in lc 10 and it makes excellent 1000 pixel wide jpegs automatically at about 4 seconds a jpeg.
If I need to make many random adjustments I use PSCS and then batch process, jpegs and full rez tiffs at 17 seconds a file on a G-4 powerbook.
For singular processing, or to acheive a different look of the file, I use either V-8, LC10, Raw Developer or PSCS.
If I shoot tehterred, which is most of the time, I use V-8 a 17" powerbook and the A-22 shoots fast at about 1.2 frames a second. I set the look of each file using the controls of V-8 which allow for curve adjustments, WB settings, rgb adjustments and brightness/contrast.
Each folder is named for a specific shot and each file goes in the corresponding folder.
Since the files are already the correct color and look, I let lc10 make automatic jpegs and then I'm done.