I have put together a comparison list for our sheet sets. I also have more detailed information about each sheet on their respective product pages and below the chart.

Sheets

Inseparable (attached at bottom & one side) No-Kick Fitted Top Sheet (bottom of top sheet is fitted with elastic) 100% Cotton Cotton/ Polyester Blend Thread Count Made to any measurements
80/20 Cotton/Poly Inseparable Sheets
Can be made as inseparable or Fitted Top Sheet Set
200 TC
200TC 50/50 Cotton/Poly Inseparable Sheets
Can be made as inseparable or Fitted Top Sheet Set
200 TC
300TC 100% Cotton Inseparable Sheets
Can be made as inseparable or Fitted Top Sheet Set
300 TC
300TC 100% Cotton Flannel Inseparable Sheets
Can be made as inseparable or Fitted Top Sheet Set
300 TC

 

* If you are choosing between the 80/20 and the 50/50, I would choose the 80/20 for a softer feel and the 50/50 for durability.  If you are ordering a hugger with a solid reverse and want the matching sheets, choose the 80/20.