I installed Alpine S series 6"x9" and 6.5" on my non-Bose LTZ this past week. Huge improvement over stock as far as clarity, mild improvement in bass. Well worth the upgrade for $147 all in, I was able to score some open box items through Crutchfield, and it came with everything for a easy install. I have a sub and amp ready to be installed, but I'm trying to figure out a mounting solution I like first.
For comparison it would have cost me an additional $1000 to get the Convenience 2 package with Bose, Nav, and the wireless charging pad. I really hated the wireless charger since it takes up the whole front storage, and I use apple carplay everyday for charging and Nav, so it would have been pointless.