QTR-Quadtone RIP

I've been using MIS UT7 inks on an Epson 2200 with Paul Roark's
curves and the Epson driver for a few years, and have been
mostly very happy with the results. 

But I'm giving QTR a try again, as I decided to get more serious
about linearizing and getting a good monitor/print match. 

I get very fine banding with QTR (which I see several people
have complained about) that goes away if I switch to
unidirectional printing. 

So here's my question: should I stick with QTR and just accept
this reduction in printing speed? I get the impression that it will
be easier to linearize and to make curves for new papers with
QTR, and that QTR allows much finer control. But I'm concerned
about the drop in speed and the QTR prints don't look better
than the ones produced by my old method.

--Daniel