I recently visited the SGIA show in Las Vegas and came across the STS Inks booth. If we switched from our HP OEM inks to the STS inks, we will save almost 50% in our ink costs. I have read a few posts regarding print head failures and warranty info. Does anyone use STS inks on their HP Flatbed 750? We have only used HP OEM inks up to this point. We print on digital ready white ACM and all are for outdoor use (Real Estate). Any advice would be helpful. Thanks.