Burner size for kegs system?? 90K or 103K BTU

Sorry if this has been asked before, but I am about to buy some burners for a Brutus system and am looking at the low pressure burners from More Beer! with the individual brass nozzles. I'm running natural gas and see that they have a 90K BTU and 103K BTU model available. They price point between the two seems to be a pretty big jump. Just curious if anyone has had the opportunity to try both and deem if the 103K is worth the extra $$???

Thanks in advance
Joe

I don't run that type of burner, but I've seen a number of posts about blocking off jets on them. maybe smaller is better?