I have TTZ that I've owned for about 4 years now. My titan will never be as quick as my Z will be, but I'm not buying it for an insanely quick vehicle either.
As for the Z. Yup, I sure do. Mine is a Z31 Non-Turbo. 87 2+2 5spd. She is the 7th I have owned. Picked her up last Feb w/33k on the odo. Changes to date are 'minor' but they are New Shocks/Struts, Strut Bars F&R, Z33 wheels and rubber, added the rear spoiler, and a few other minor conviniece things like a 6 disc etc. Here is a pic of her.
That's a sharp lookin Z31. I had an 86 myself for about 5 years. My dad has a big thing for the 84 anniversary editions. He has 4 and one with 32k original miles on it.
Well my 7 have been: 80 10th AE Gold/Black, 83 Gold/Black 2+2, 84 AE, 85 NA, 86NA, 87 NA 2+2 (Current) and a 90 NA 2+2. As you know, that spans over 3 model types and they all had thier own appeal