I have been using 博士倫 B & L (Bausch & Lomb) for more than 20 years !! The one I am now using is one month 即棄. Simple cleaning process is required, I forgot price, around $700 for 12 pairs. 1 days 即棄 is more expensive and also, I seldom using contact len for one whole day. It's not worth to use 1 days 即棄.