I used LPD for years but wanting to change to a developer with a better environmental foot print I switched over to Eco-Pro's ascorbate based paper developer.
The results I get with MGWT are outstanding. I am amazed by the wide range of tones in the prints. The developer life is phenominal as the quart of stock solution has lasted over 8 months in its partially filled original container.
To make a working solution the stock is diluted 1:9 which makes it very economical and is very similar to the results I obtained with LPD. It works well with either warm or cold tone papers and can be diluted to 1:14 for warmer or colder tones.