quartz for backsplash pros are -without grouting ( compare with mosaic tiles )  easy to clean ,
-normally I suggest for condo customer or those customer no change wall tiles
because exiting socket not enough then add socket difficult get the same colour wall tiles
then cover with quart backsplash easy way
-exisiting kitchen without wall tiles cover with quartz stone it will look nice and save the budget for wall tiles
bellow the cons
-if existing wall tiles nice & socket enough can save the money for kitchen accessories
-if use the normal dot dot texture quartz stone actually the effect same with tiles ( just without grouting )
-if wan look like magazine that one call marble quartz stone / sintered stone the cost will be Rm 400
for 10 ft base and 10 ft backsplash & table cost you Rm 8000 dy haven't masuk cabinet yet .

but normally depend the customer budget , then plan which material or tiles .
because wall tiles function is block the brick wall moisture came out , normally suggest do wall tiles.
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above this backsplash marble quartz stone

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because the client out of budget then another side stick decoration mosaic

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this kitchen existing without any wall tiles , by the way this is engineering stone