I am not a chemist so I go by only my personal experiences.(posted 8134 days ago)
I was using Ilfosol for about a year because it was easily available and is in liquid form, but was getting very grainy, mushy results with Tri-X 400. It was suggested that I use Ilford DD-X or Kodak Xtol and both immediately improved the results beyond my expectations. I use Xtol now since most stores near me just don't stock DD-X. The grain using Xtol is so fine I have great difficulty focusing my Tri-X 400 negatives with a grain magnifier.