My sympathies--I was on a similar quest about a month ago, up until which time LD20 was my favorite. I ended up spending (definitely not wasting) time working with various homebrews, many of which were based on old patents for lith developers. After a chemistry guru straightened me out on an important point with respect to sodium formaldehyde bisulfite (thanks again, PE!), I settled on one formula that is cheaper by the print than LD20 was for me. You may not be looking to go primitive now, but keep it in mind.
It is adapted from Arista's old lith developer, which the MSDS says is Naccolith. The ingredients listed were given in terms of percentages, so I had to tweak things somewhat, and I made some changes of my own. Here's the formula I'm currently using, provisionally referred to as pseudo-Naccolith:
Part A
200 mL distilled water at about 120 degrees F
Hydroquinone 8g
Sodium Sulfite 2-3g
AmQuel* 225mL
Water to 500mL
*the ammonia remover, available at any pet store that caters to aquariums, is dilute Sodium Formaldehyde Bisulfite; not cheap, but still better than prices on...let's just say "some products."
Part B
200 mL distilled water (cold! about 38 degrees F)
Sodium Hydroxide 11g (dissolve this first, and carefully)
Sodium Bicarbonate 3g
Sodium Carbonate Monohydrate 5g
Sodium Metaborate 10g
Potassium bromide 2-3g
Distilled water to 500mlL
I'm making it in 500mL batches because the results seem to change with the age of the stock solution, and I like the colors of the younger stock a little better.
I do not yet have extensive experience with this concoction, but so far, I love the results I'm getting, especially on Forte Polywarmtone Gloss. BLACK black, chocolate brown, very cold gray (think blue), vivid orange, pale pink, and white--often all in the same print.
I think the colors were a little better when I substituted 80mL of the distilled water in part A with 80mL propylene glycol, the RV antifreeze (I was using it to try to maintain a stock solution of 10% Hydroquinone, a scheme that did not work with the brand of propylene glycol I was using--evidently it does contain some water). I'm going to reincorporate the antifreeze in the next batch and see what happens.
Colors seem to be the best in the 1:1:30 to 1:1:40 range, usually with 1 part old brown.