I formerly worked for a Haas distributor (and now a Doosan distributor), and installed and serviced quite a few of their SL lathes. There were several things I didn't like about them:
1. The X-axis was counterbalanced by a coil spring, which had a tendancy to break where it was anchored to the saddle bracket. This could cause real problems if the machine went into E-Stop as the X-axis would just coast down until it bottomed out or hit something.
2. The turret unclamp was done by an air cylinder which rotated a plate with three ramped cam grooves. It used 3 hardened steel balls that rode in these grooves to lift the turret off the curvic coupling. These were a constant source of headaches.
Check for posts by PBMW about his problems with the Haas lathe and his subsequent purchase of a Lynx. I believe he's happy with the move to Doosan.