I have been using UART paper for 99% of my work the past 5 years.  Every time I start a new painting, it’s like revisiting an old friend.  The feeling of swiping a pastel over the fresh, untouched surface is tough to beat.  And the paper is always consistent.  I’ve never had an issue with odd surface texture or patterning that I’ve experienced with other papers.  I can’t recommend this paper enough.