Digital BW, The Print

I am wondering is someone can compare QTR to Paul Roark's methodology 
of making B and W prints from both an ease of use and technical 
standpoint (print quality as you define it). I tried installing QTR 
and QTR GUI in the next to last version on my WIN XP machine - Epson 
1270 with MIS inks and it did not seem to work for me (long story).

I just started using the Roark curves and it is working. I have not 
spent much time using this system, but it seems like a large number 
of posters to this list are using QTR and are enthusiastic about this 
system (QTR). I am wondering whether I should try getting the QTR to 
work on my machine. What does QTR allow you to do that the Roark 
curves do not? It may help to know that I am looking at getting an 
epson 2200 to do color work also. Will either system allow me to do 
both color and b and w on a 2200? I do understand from reading 
through the list that both are excellent systems but from a 
newcomer's perspective I am having a hard time figuring out the 
quality difference between the two systems. From an ease of use 
perspective, Paul's methodology seems easier to set up inititally.