
I can't say which is better or worst. But im'a play the role of a pro studio. That said, I never shut anything off. None of it.
I left my SP running for 7-8 months. Never a single glitch. Never locked up, or bugged out. I did have an SP that would get tempramental occassionally and jump to 220 BPM and auto play the sequence at the same time... But that wasn't the 7-8 month running SP, and, had nothing to do with powering on or off.
With that said, I've always percieved vintage equipment like an old Zenith TV. If you keep clicking that shit on and off, eventually the pictures starts to fade. Same thing with these old electronic mother boards. I don't think they like blasts of voltage 5 times a day. Seems to me that would wear them out quicker.
A lota people talk about heat, but heat isn't ever an issue unless your equipment isn't properly ventilated. I keep my studio at 68-70 degrees at all times, dust removal system in effect, power conditioners etc. A lota cats over look that aspect of the studio. The power, the cabling etc. When really, thats like 90% of the battle i've learned.