Hello armybass,
I'll chime in.
I have been melting and mixing rosin for about the past 10 years, or so, with very good results.
I had used Nymans, but found that it dries out and becomes difficult/impossible to apply. (I live in Los Angeles and it is very dry here and when it is HOT, we use A/C to stay alive.)
I now use (and really like!) a hybrid blend of 50% Pops/50% Nymans - the Pops acts as a "thinning agent" for the Nymans - I have never used Pops by itself - wayyyyy to "gummy" for me.
Note: I melt equal amounts of each in the Microwave or over a gas flame to MOLTEN consistency - this is important, as I have a Theory that ALL Rosin dries out and becomes hard, esp. the top exposed layer. I then thoroughly MIX the Molten rosins and finally pour it into a container/cup for cooling. (It helps that I might be a Pyromaniac...)
There are a few Threads here where I document my process.
The end result is a rosin that is easy to apply, but not too "wet" like Pops.
One last thing: I often Re-Melt my rosin cakes, (about every 4 months), as I believe ALL rosin dries out and becomes impossible to apply. It really brings it back to life - don't forget to Stir It Up when it is Molten.
One more last thing - I also recommend using a Very Clean, soft cotton cloth, to clean old rosin off of the bowhair, by vigorously rubbing, in both directions, along the length of the hair, under tension, before adding any new rosin.
I hope this helps start the conversation.
Yes...I have a very sad life.
Thanks.