Thanks for all the replies. I'm 6' 1" 210-220 depending on the time of the year. (Heading up!)
The Z3 is extremely low to the ground but I have no problem sliding into it. The problem comes from trying to get up off the ground while trying to get out and I have a habit of occasionally twisting my lower back when I rush my exit. It's never bothered me though because the drive makes it all worthwhile. (Sound familiar?) It's pretty close to the feeling of actually sitting on the floor and then pulling yourslf up. The crossfire looks like it sits considerably higher. I have my eye on one if it's still there when I get down south. My wife has already given her seal of approval so that usually means I'll get it if for no other reason another toy has been pre-approved!

Then I can drive them both for awhile and take my time deciding if I have to.
Thanks again!