Digital BW, The Print

I am early in the journey of learning the ins and outs of getting a 
decent BW print from my 2200. At this stage I want to stick with this 
printer and get the best out of it and use it to experiment with 
before moving on to the latest and greatest. I am currently using the 
Epson inks and have experimented a little with QTR. 

The two big issues I want to resolve initially are those of getting a 
BW print without color cast and also getting a print that may 
initially be without color cast but as soon as it is viewed under a 
different light source it suddenly looks bright pink (or whatever). I 
understand that this is referred to as metamerism?

I have done lots of web searching and have purchased Amadou's book. I 
have narrowed down next steps to the following options:

1. Stay with Epson inks and use QTR. Will this solve my problems by 
eliminating the use of color pigments by the printer?

2. If not then move away from Epson inks to a dedicated BW inkset. I 
have narrowed the choices of ink down to three:
  a. UT-3D from MIS
  b. UT7 from MIS
  c. K7 from Piezography

My questions are:

  a. How far will QTR go to solving my two issues in combination with 
the Epson inks.

  b. If I need to move away from Epson inks, is there a clear 
recommendation from the three inks mentioned above? Alternatively, is 
there a better inkset available that I have not found yet?  

All comments are appreciated. If these questions are naive and/or 
simplistic then please point this out and the reasons why they are 
naive or simplistic. But please be gentle - I am new at this!

Regards

Alistair