I wouldent even hesitate in picking rock lobs, even if you dont need to level summoning, when you do, youll have those charms and be glad you bursted there.
Kree = Longer runs, costs more, more kills per run (5-7 for me with tortoise), harder to die, drops worth more. Bandos = Quick runs, pretty cheap, 1-3 kills per run with BoB, can die easy if not paying attention, drops are ok but doesnt go above 30m
I always keep cash instead of items because cash is more valuable to me. If you want to level a skill its right there. So why not keep it instead of spending it.
When you have one 99 skill, the whole cape is one color. But when you have two 99 skills, the trim along the side on the cape turns another color. Untrimmed just means you have one 99 skill.