yes i have seen better chips and will change to them , the routines work for all the same size chip , ill how much i can get the SST25VF080B for ,
but ill also try W25Q80BV - have ordered 200 of these at 6c each + freight

these when they arrive they have a 4k erase space option , and have 25ms time to do it , plus other optionsthat come from the Q series of flash .

be it 4k or 64k , a routine to change say 1- 256k bytes in the same sector/page on the fly is really nice routine to have on hand on these chips and would be easy enought o change to the size that best suites your needs


http://www.adafruit.com/datasheets/W25Q80BV.pdf