Speaker placement comments wanted

[75C10]

I am planning a sound system for my Blazer and am looking for comments that reflect personal experience. Do the aftermarket tweeters for the A pillar work well? How about the pods that utilize the kick panel area at the foot level? The rear speakers are easy. Because I am north of the 49th returning items is typically not worth while. Everybody sells these speaker parts but not many comment on them. Comments are welcome. Thank you