Digital BW, The Print

I regret to report that I'm still having clog troubles with my 1280. 
I've tried the Windex tricks via both the printhead's resting pad and 
flushing through the head with a syringe.  I ran a color cartridge 
through the printer, printing both color, B&W with color ink, and 
black only.  That worked OK with the usual cast and metamerism 
problems when using color ink for B&W.

I bought MIS cleaning fluid, soaked the pad, let it sit overnight.  
Didn't help.  I put in MIS cleaning cartridges, printed several purge 
patterns, left it sitting turned off for a day. Repeated the next 
day.  Put fresh MIS Ultratone and Eboni carts back in.  Got a few 
beautiful prints.  

Two days later, I have clogs again.  In several of the color 
positions.  Most of these clogs seem to move around from nozzle check 
to nozzle check, but the "yellow" position clog that started this 
whole saga is still there, as always.

I'm about ready to give up on this printer.  It seems to do OK with 
Epson color inks, although a couple of the yellow nozzles never show 
up in the nozzle checks.  With the MIS VM and Ultratone inks, clogs 
keep happenning.  When it works, the results are exquisite.  But I 
have wasted countless weekends and several cartridges of expensive 
ink, to no avail.

My next question is this:  Is it worth it to get the 1280 fixed, or 
should I just cut my losses and get another printer?  If the latter, 
I'm open to advice on which printer to get.  I want to be able to do 
good, smooth, consistent B&W printing.  I don't want to spend all my 
time screwing around with clogs.  I love the results I get from UT 
inks, but it's starting to seem like it's not worth all the trouble.  

Thanks for any advice,
--Peter