Good quality... here is an example of J-weight cloth backed 3" x 10-yard 60 grit alum. oxide from Klingspor-
361 60JF 3" X 10 YD
www.klingspor.com
I like the 3" wide rolls. It come in 25-30 yard rolls as well. Start with 10-yard rolls, tear off as you need it. The roll will last you a good ling time.
Red Label Abrasives is another one to look at for J-weight cloth rolls. Do not buy X-weight abrasives from these sources, the backing cloth is hard, stiff, and unforgiving, made for machine operations. Not the right stuff for hand sanding.
Red Label Abrasives Premium Quality Sanding Rolls Red Label Abrasives is an American abrasive manufacturer that has been producing sanding rolls for over 35 years. Our abrasives are produced to be industrial-grade. Our goal is to provide you with premium-quality sanding rolls at some of the most...
www.redlabelabrasives.com
Rolls of 120 or 150, 240, and 320 (maybe a 60 or 80 grit if you also want something course) would make a reasonable introduction to the products, there are other fill-in grits, and different roll widths, as well. Grits are found up to 400 and higher.
J-weight cloth is very flexible and will fold easily, but does not crease like paper backed abrasives. It's sort of like new blue jeans. I've used this stuff for 25 years on everything (spindle and bowl, hardwood and soft), and I've never been let down.
Sheet packages from the hardware store are not an economical way of buying sandpaper.
Wet/dry silicon carbide paper isn't really the best choice for wood sanding. I'd stick to the aluminum oxide products.