Got the shorties from COV today. 3 ohm on my bartleby and the throat hit is less than the R3 XL's w/PTB. I have never had a burning problem (except when running dry). I think I'll order more of the R3 XL's if I can find them. Definitely a better hit all around. I will eventually do a PTB mod on a shorty just to see what happens. But I think the main issue is 3ohms. I guess I like what everybody else thinks is too hot.