Choosing too hot vs too cold?

I personally would rather have them in the fridge.

If you plan on aging these for a number of years, they are going to taste different respectively. If you keep them in the fridge it slows down the aging process. Stored warm somewhat escalates the aging process and not in an ideal way.

In the past 5 years ive gotten to enjoy the learning experience of the same beers aged properly verse not ideal and it has given me a real sense of appreciation.

 

They'll change/age faster in the dark closet. The fridge would slow down the aging process.

So, for me, I'd likely keep them in the closet until I feel that they're in their sweet spot. Then, I'd move them to the fridge. Neither situation would do any harm to the beers you've listed. Assuming you're not aging them for 5/10/15 years.

 

depends on the sours/stouts

I never age regular stouts. Some Imperial stouts age ok but I haven't seen any actually improve with age. My primary reason for aging something is because its either too boozy, or too bitter, for my liking.

As for sours, they're generally good candidates for age... but, again, what is your goal? Some sours get more sour or funky with time. For example: I went to New Glarus and came back with 4 bottles of Wild Peach. I drank one every 3 months. Even within that short period of time, the peach began to fade and a funkiness started coming forward. Since I loved the peach taste, I chose to stop aging my bottles, refrigerate them, and drink them sooner. There are others on here that will say that I'm a lunatic and that the Wild Peach is "just starting to get good." They're not wrong. They just have a different preference.

If you take nothing else from my post, stop aging bottles when you find that you love them. When you find that "sweet spot," throw the rest in the fridge and drink them at your earliest convenience. That way your favorite aspect of the beer won't fade away due to age.