Was using the rsbuddy one by "Aidden" but since the update it is having trouble banking at Soul Wars, so I've had to go back to alching but I hate alching
Well, with the bot I was using it could usually fit in around 1.5k super heats per hour.
Smithing xp would be 56.2 (with gold smithing gauntlets) x 1500, which is 84.3k/hr.
Magic xp would be 53 x 1500, which is 79.5k/hr.
You lose more than you would when alching, but you get a lot of xp so it's probably worth it