Rick,
I ended up just using the BIG syringe. It depends if you can tolerate taking 200-300 ml or so in a short time. Initially, I also used the blender later on Jevity and Benecal as a calorie boost.
I ended up getting my PEG clogged several times with blended half raw vegetables... you might want to make sure the stuff is fine enough.

Re soups: I would not take them cold, also at least warm them up and make sure they are ok.

M