I agree, I recently picked up a set of APEXi T-MAX coilovers for my GTR which comes out of compliance soon, and ever since have been getting cold feet after doing lots of research and discovering that Jap coilovers in Oz are considered quite bad. Nothing like a bit of hindsight after a rush of blood purchase. The springs on them at the moment look very agressive, most people I have shown refer to them as "drift spec" springs. I have bilstein shocks on my GTST at the moment and have to agree that they are the best I have tried so far, great handling yet somehow quite comfortable too.
I was going to sell the coilovers, and get a set of whiteline springs/shocks or even wait for the new whiteline group 4 coilovers which should be released in a couple of months, but I am going to try something different.
Went here yesterday: http://www.shockreco.com.au/, and am going to try something a little different, just to see if it will work. First am getting the shocks checked out, make sure they are in as good a condition as they look, if they are good, then I am getting a set of King Springs to suit the coilover size, new bump stops and dust covers. When all back together he is going to put test them again for me to ensure the shocks are a close match for the springs. If so, I should have a damper and height adjustable coilover with an acceptable ride for about the same cost (+$50) as new set of springs and shocks. If they are a terrible match then they will have to be re-valved which will blow out the cost a little but will still end up a lot cheaper than an equivilent set of new coilovers.
I am keen to "feel" the results, might be an option if your car already has coilovers you can't live with for day to day driving. If it doesn't work, I will have a little cry, and get the Whiteline spring/shock combo like I should have at the start!
Pics of the coilovers as they are now.