I, like Matt, used replenished HC-110b, used it for 5 or 6 years and thousands of rolls of film, 95% of it TX. What it did, it did extremely well, but it was very difficult to work with in some regards that no matter how I struggled I couldn't fix, and my work hit a point where I couldn't have those problems.
Originally Posted by MattKing
Then I tried Tmy2 in replenished xtol. Over the past 6 months I've been working with that. It took me about 50 to 75 rolls to begin to understand it - it is a BIG jump from TX and hc-110b - and a lot of that was getting over old biases and habits as far as a negative and printing, but now that I've begun to figure it out and I can't believe I've been missing it for so long. It's not that it is fully capable as far as making a great photo, almost all films and devs are, it is more that it is extremely easy to work with, from storage, to stability, to mixing, to how it responds to agitation and temp. I'm still a bit stunned at how easy it is compared to what I was doing, and quite frankly, how much better my prints are for it.
But this is all an aside, back to the OP, the replenishment process is great. Don't get caught up on the stability or the developer loosing it's action...xtol stock has a shelf life of something like 6 months doesn't it? After seasoning it's really really nice in a way that I won't bother trying to explain here since others have done that in other posts. Just give it a try.