I've run Enkei wheels for ages now, never had a problem at all.That said, there are some companies that make a very good cast wheel (Enkei, for one) that can come close to matching the performance of a forged wheel. The flipside is that matching the correct widths and offsets for a JZA80 is challenging at best, and most wheels offered come in a 9.5in width at best with Supra-friendly offsets.
First were the RP01 - long since discontinued, boy they were a pretty wheel - I forget the specs
Then RZ5 - more aggressive meatier look 18x8.5 +42 and 18x9.5 +42. Lots of track weekends on these.
Those were both on Eibach lowering springs and KYB AGX Pro shocks. I went to Tein coilovers and Brembo brakes, and the RZ5 didn't fit any more dangit.
So on to Enkei PF01 silver in 18x9.5 +45 and 18x10.5 +38 (these are for sale BTW - see forsale forum)
And finally Enkei PF01 black in 18x9.5 +45 and 18x10.5 +48 (custom)