Ok, installed the Infinity Reference 3022 corner dash speakers today. 3ohm 75w. I did not install the crossovers included.
@Livinfast85 is 100% correct... or we have the exact same hearing. HUGE difference. Bright, more range, depth and clarity for days. With the stock Alpine corners I always had the mid range off, all the way down in the EQ. With the Infinity I had to re-introduce the mid range, they just begged for it and really fills the front soundstage wonderfully now.
I feel bad for those that have experienced no change or little change in sound quality... even my 6 year old son, who was my tool manager, said Wow!
Thanks to the OP for experimenting and all the others that followed along and posted all their info.