hispls 5,000+ posts
CarAudio.com Veteran
Totally dependent on vehicle and personal preference. Get some double sided tape or something and just stick them to various places and play some music and see what sounds best before you permanently mount.Is the pillar generally better in most cases?
Compared to the Apline or similar known quality head unit, apparently so. Honestly at some point you might consider finding a good custom shop that can just build out the dash nice to accept a standard DIN size head unit. Even say 800$ for a custom dash and 400$ for a higher mid-end standard mounting size head unit is better than the sized to fit options and allows you a lot more choices and easy replacement years down the road.$5-600 is cheaping out?!
Out of curiosity, why are you saying stay away from noico?
I have used that in a couple vehicles and haven't had an issue, but I don't see more than 5 90 degree days a year up here. Might err on the side of caution if you live in Florida. You could probably melt the damned aluminum off of deadener down there in July/August.