QTR-Quadtone RIP

Hello All,
I am considering converting my epson 2200 to Cone's K7 inkset. Is there 
any experience out there in terms of the quality of prints in 
comparison to Piezography and how is the mechanical construction and 
integrity of the cartridges... e.g. leakage of ink, sturdy fit into the 
carriage etc. 
I am assuming that the profiles that come with the inkset will be the 
usual superb work done by Jon and Co. as in the past.
cheers
Vartkes