Since I was gonna update this thread regarding a recent install, might aswell tag your post in it if it helps you out
1) Is there a budget in mind? And are you planning on running these from the stock headunit? Does your car already come with the tweeter pods?
I wouldn't bother with the Cento pro. Firstly because its almost impossible to find authentic Cento pro's (Fake Hertz everywhere) and even if you do, they're not exactly budget friendly. You would also need an external amp to run them. You're looking at something that doesn't need too much power to run with high Db efficiency
2) Been using auxled's since 2020. They are terrible in halogen housings (low beams don't have the same factory cutoff and you will end up blinding oncoming traffic unlike Novsight). I've switched all my car's to novsight since last year apart from one. But auxleds will work fine in projectors. My only issue is that the only car that was running their bulbs failed under warranty (first time from all my sets bought since 2020) and its been 2.5 months since the claim was made and I still haven't received my bulbs. Their excuse? Management has changed. Stocks not available etc etc. They finally dispatched the bulbs yesterday after but I'm not buying from them anymore
Here's a few pictures of another members civic who bought most of the stuff from me. It was a solid build but the install was super clean, within his budget
Pioneer AVH-A215BT
Helix S62c.2 components
Infinity Reference 6532ix coaxials
Pioneer GM-A6704
Pioneer GM-3500T
Infinity Reference 1270 subwoofer (sealed 0.75ch/ft)
3M sound treatment on all 4 doors + rear shelf + trunk