Developer - stop - fix - washing sequence (Ilford): Simple, quick and easy. No need for intermediary rinses at all or even the alkali fix. Dev = alkali, stop (acid), fix (acid). Alkali fix is sometimes useful for staining devs but even then I did not bother and ntoed no issues with my images. Waste of money and hassle IMHO. I took the nonsense about acid stop and fix éating away at your low density regions in the negs' as a marketing fib. At no point did I see any evidence ever presented by anyone that in normal fix times acid stop and fix actually did anything of the kind. Lets face it, neither ilford or kodak produce them, so if their products were being ruined by acid products you'd think they would take note!
I use very dilute stop and tend to discard.
Devs with fineish grain and good shelf life:
DDX - good shelf life but expensive. Use at 1+8/9 for better economy. I am reacqainting myself with this dev after time away. Fine grain and even better speed than Xtol and about 2/3 stop more than than D76 1+1.
Xtol - Yes. In full tightly capped brown brown plastic Detta bottles it lasts 6+ months as stock. Not one single failure in 2 years even from half full bottles at 5 months old kept at 23-27 degs C. I test using leader if the dev has been sitting about ages. at 1+1 or 1+2 it still has finer grain than D76 1+1 IMO and roughly comparable acutance. No pH rising peaks and troughs as per D76/ID11. Dev times dont change.
HC110 - No real experience with this