Thanks for the opinions; keep 'em coming!
So far, you have made me re-think what exactly I want to get out of this in the end.
I prefer the narrative I write myself, and don't really want the programme to do that for me. I think I am just looking for a place to put all the basic facts and their source footnotes, cross-checks, and sometimes substantive notes, in a way that can be graphically presented with colour-coding, more as a reference item than as the 'whole story' - something to refer to while reading the Word narrative and looking at the photos etc. I do collect a LOT of "basic facts", however, and I expect to soon have 11 generations in some files.
I don't have a GEDCOM, and have never been quite clear how I would make one. I do have that kind of a chart, but I just do it in Word, as part of my larger documents, as needed, and I stick in other bits that I want to have in there at the same time as there is no space limit. (Sounds strange maybe, but it works for me!) I have never wanted to give much of my info to GenesReunited or to the LDS sites, as I don't entirely trust them, although I have found some good contacts there from time to time! I think I could learn a suitable computer programme, but I don't do it often, and I always hate it when they change things after I get used to one way!
The question you raise about what the product will look like in the end, and what do I want it to look like, is a good one. Not sure exactly, just want it to be comprehensive and accessible, and with the possibility of variable font sizes so that people with vision problems can read it. I am a bit bewildered about how much it is possible to put into one chart, or how one prints out large charts. I don't think I can put everybody into one continuous chart. But I am assuming these programmes will have some way of producing and printing relatively large graphic charts? I mean the kind where you can see the connection between "A" and "K" at a glance through several generations, and it might take up the width of a wall in your study. Right now, I think I could paper the whole room with them!! (Would be fun, actually!)
I should perhaps add that I need something that can transcribe in other Western languages, with accents and so on.
Probably should experiment a bit, as you suggest.