Hey Taurean what is/are rectified tiles? We are finalising our new kitchen design at present and are leaning towards tiles rather than glass spashbacks. Because of the shape of our kitchen I think glass will work out to be horrendously expensive and would need to go from worktop/hob to ceiling so would be large area to have as glass.
Hi hon! Firstly, how exciting! New kitchen!! Be sure to share the before and after pics!

Rectified tiles have a really sharp edge allowing them to be laid very closely together, often giving the illusion they are one big tile - kinda That's why they make a good alternative for a splash back. They look amazing in bathrooms too. They do cost a fair bit more than normal tiles (to buy and lay) but they are cheaper than glass so it's well worth a look.