Yes the spell drop on juggs is very nice. It seems to be mainly mage spells. However, the xp is not that great. If you're thinking that you are going to get nice xp, I would say you're wrong. But let me explain. The fights last much longer than krup knights. The xp from the chef room flies by. The time you take to kill say a myconid or a reet could have resulted in about 5 krups, which are at 60% or so of the xp of one myconid each. So 60% xp times 5 in the same amount of time, results in much more xp.
This is just a point about xp. If you want the drops, that is the only reason I would suggest you come down to juggs or king for. Chef is a much better xp camp. I dare say it's the best xp camp in the zone, for the higher level player. Upper exit is good xp for the 50's group.