The deciding poingt is Cost..
For example,I want to get a quote with 60*80MM 4 layer PCB design.
I get a quote for 22K USD for 20 pieces, I naturally objected.They said is because it has buried vias. Later, I changed the design sent the gerbers back, price was 150$ in 5 working days.
Unless you have BGA package, don't use any via other than through hole.
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