I've used the Eco-Pro/Legacy-Pro. It is identical to X-Tol. B&H lists it in stock.
Are those sold in dry form, or as premixed stock? And isn't their Legacy-Pro a D-76 clone (seems I read it's more like F-76, with phenidone or Dimezone replacing the metol).
Translation of my post: My photographs are valuable so I will not weigh and measure chemicals. If yours are not feel free to play junior chemist.
You could as easily say, "My photos are valuable, so I will not trust the quality control of those to whom they are not. if yours are not, feel free to let someone else mix developer for you (or just send your film out)."
I've had a couple development failures since I started processing my own film again in 2003. Not one has been due to an error in mixing my own chemicals -- nor to a chemical quality control problem at Kodak, Ilford, Fuji, etc.
They've been due to trying to get one too many rolls out of expired/exhausted developer. Both of them.
If you don't trust your ability to mix chemicals, why would you trust you ability to dilute or replenish correctly? Better just mail those rolls away, pay enough for each roll processed to buy a couple bags of Xtol (or a Cinestill C-41 kit). wait a couple weeks to see your negatives -- and play the blame game when something goes wrong. At least when my film isn't printable or scannable, I know where to point the finger.