ANybody used a CIS from CityInkExpress in UK?

Thinking about adding a CIS to my IP4600 to bring printing costs down, rather than going for the cheapest half hack version I came across the below, seems better thought out with no chips to remove/reset like on cheaper ones, trouble is I can't find any reviews from people using them! Hoping someone on here might have regardless of the printer type?

http://www.cityinkexpr​ess.co.uk …/ip4600/ip-series/dye-ink

Shelton.

try fotospeed

They're made by Fotorite who have hugely good feedback on ebay
http://feedback.ebay.c​o.uk …fotorite&ftab=A​llFeedback

I use one of their systems on my office inkjet and it's been great.
I wouldn't ever use third party inks for photos though, too many bad and expensive experiences.

EDIT: ...and I've just noticed this is 3 months old... Grrr necro.