I am currently using 1705. I have had no problems with any bios since 1305. For me 1305, 1602 and now 1705 have been the best. I have not had 1705 long enough to know yet but, so far if there has been a best bios for my system it has been 1305. I will tell you though so far I am very happy with this new one. I'll know more in a few days.
WZ