Hi Jon,
And I power my B2 on and off each time I use it (most days as part of my support role) and have had no problems either in nearly 5 years. I do usually do the 'Saving' routine (with the clock displayed, press and hold the Play/Stop button) before powering off but if the B2 is already in standby I just power off.
If you decide to leave the B2 powered it is a good idea to set 'Screensaver' - Maintenance menu (setting 16 switches off the display in standby) to prolong the life of the display (OLEDs - organic LED displays - have a limited life if run at full brightness).
Paul
Brennan Support.