My main reason for stepping up to the XLE Premium was for the SofTex seats, they're so much better wearing and easier to maintain than fabric seats and don't require seat covers, we've had several Toyotas with SofTex, never had a problem with them.
My '06 V6 Rav4 had fabric seats and was showing signs of wear after just 3 month on the driver's seat, bought Wet Okole covers, they wore like iron, were fairly easy to clean and looked like new even after 8 years when I traded it off.