What makes a good note?
A first lien position is more valuable than a second. A shorter term note is more valuable than a longer term note. The bigger the down payment the more valuable the note. The more the loan has been paid down the more valuable the note. A note secured by improvements to the land (house, outbuildings, well, septic) are more valuable than those notes secured by property with little improvements (raw land). If the payer lives in the house the note is worth more. If the payer has average to good, credit the note is worth more.