Thanks for your feedback.
Based on my initial research, the wax coatings I saw at the discount retailers threw me off a little too. I think you may be spot on with your far east junk appraisal. I am in Australia and the majority of imported tiles here come from China. They may or may not be taking shortcuts? Maybe its not fired as super hot as it is supposed to be so some require sealing? Im not sure.
Looking back at my (Australian) internet resources I am seeing some mixed results on the top sealing phase. Some are saying dont do it ever and others are saying I may need to but check with the manufacturer. What about penetrating sealers? Check this post out: http://www.tileswithstyle.com.au/mai..._porcelain.pdf
From what I have read, the high temperature firing of these tiles creates very slight morphing making the tiles not perfectly square. Like if you took a regular ceramic and compared it to a pp it would be a straighter cut? I have not checked this out with any real tiles though, just what I read about them.
In any case it sounds like I need to focus on finding a decent product to lay and steer clear of the junk.
So assuming I find a real polished porcelain tile with rectified, straight edges, are you confident I should not apply any sealer? top or penetrating? I'll take your double mention of it as a yes.
Am I going to struggle in keeping these things all perfectly flat? Im really afraid that once the job is done, ill look down at a mirror finish but one tile will be poking up and ruin the whole effect.
Check out this information (or mis-information): http://www.tilecouncilvic.com.au/res...esJune2007.pdf
Any help appreciated.