Here's my reasoning:
1. The X2 5035 is a full-featured BIOS, compatible with all XBOX versions that support VGA (1.0-1.5)
2. All modchips (not just Xecuter ones, unlike the X3 BIOSes) with a 512k or 1MB bank can use it (including v1.0-1.1 TSOPs)
3. It has an easy-to-use configuration file (all other BIOSes need to be modified using either EVtool or XBtool)
4. Xecuter BIOSes seem to be the most popular overall
So, the X2 5035 not only covers all the most important features in a BIOS, but it was also the easiest to modify and hack. (in my experience, the Xecuter BIOSes are the most friendly to hacks)
Although, the EvolutionX team makes a great BIOS too. I may be releasing an Evox M8+ version with my most recent VGA hacks pretty soon.
Edited by FrostyTheSnowman, 13 October 2007 - 06:44 AM.