My guys like it different.
.my one guy I keep his hot spot round 93-95 hot side temp86-88,occasionally bumps up to 90.. But he only stays on his hot side,all the time since day 1 I've had him.
my other guy I keep his hot spot around 90-92 but he seems to lay on both sides. Temps are the same,around 86-90
i keep both heat bulbs and UTHs for my enclosures,year round due to the cooler seasons and then the hotter seasons i have the AC on..so year round bulbs and UTHs are going and necessary.