welllll...good question....there should be lots of reply's on this good topic....
after running both on the street with mild performance set ups, I perfer the 292-LOTS more torque and power....I can tell this especially going uphill-but I also have advantage of the PES bolt-in lump/plate modification.....
250 will burn less gas-but turn more rpm to get same or similar torque and HP as 292, so will it save gas for performance?
292 is a lower rpm engine....
i perfer 292,but 250 is a great engine also...
get as much info from many-many here have good comments.......