I'll only have buyers remorse if the next minis run a lot cooler.
Performance wise, I love the mini. But if I try watching a blu ray rip, the cpu will be in the high 80s, and when using handbrake, it goes up to around 96c!. The cpu while typing this is at 55c, and thats like what PCs are at when gaming lol (my mini sits around 75c while playing Flatout 2)
They might be "normal" temps for the minis, but I'v always been a PC user until recently, so these temps scare me!
If the new minis are a lot cooler, I might have to get 1, just so it's a lot less stressful when using it lol.
Your fans are always on when your Mac is on, spinning at a minimum of 2000 rpm (for MBPs) or 1800 rpm (for MBAs, MBs and minis). They will spin faster as needed to keep temps at a safe level. If they're spinning up without increased heat, try resetting the SMC. PRAM/NVRAM has nothing to do with these issues, so resetting it will not help. Also, make sure you don't block the vents, which are located at the rear, near the hinge.
I've had 3 different Mac Mini's now and all three have been exactly the same... The noise when the fan hits 5500rpm is like a hair dryer. This is not exactly helpful late at night or when laying down some vocals or a podcast because you can hear the thing in the background! The fans even go ballistic (and temps go up to the 90's) when copying data from one place to another for example from a server to a FireWire drive or from the mini to a FireWire drive. The same even applies when emptying the trash securely. In short I'm hoping to take mine back for a refund and plan on using my older mini for now. The model I've got the problems with is the one with the AMD Graphics Card in it.
Over and out!
EDIT: I should also say that I've been onto AppleCare twice and they did suggest the SMC reset etc, etc. They just seemed to think it was all normal. But obviously recognised the inconvenience it was causing me for my particular setup