I humbly await some response. Thanks
You will probably get a bit more just buying, but that really depends on the prices of betarigs, the profatibility of the pool and some other variables.
Why i, personally, would rent:
1) I'm surporting the initiative
2) I have a chance on extra BC (bonusses)
3) I'll create more buy pressure for the pool, so the price will go up
4) I'll help in reaching 10GH/s so the bonuses will be the highest amount as listed.