I tried Ink/Stitch. I can't remember anything about it unfortunately, although I didn't persist with it - I think I was looking for something to add lettering to files and it either didn't work very well or was difficult to figure out.
I think the only way to find out is to test them yourself - what I find difficult to fathom may make absolute sense to you!
I ended up paying £45 for SewWhat Pro, which does a little more than the free software, but, naturally, isn't anything like full digitising software. I like it very much, although when I want to print out files for in-the-hoop patterns I use Premier+ (the free version) because it keeps a file on one page and doesn't print all the extra info that I don't want!