I don’t think that the stainless cdf is supposed to be any comfier than the 725 cdf, and I don’t think the tyre clearances are any better.
The tripster is comfier than the 725 cdf, and a couple of lbs lighter, so It would be better for all day rides.
Plus the tripster can take 40c tyres under mudguards, and mine with 40c wtb nanos is excellent, went for a 40 mile ride on Saturday even though I am in the midst of a heavy cold.
Do I think your choice is between the tripster, and the shand, and maybe that other titanium one that has been mentioned.