if you dont mind the extra weight/money, go for RaceFace Diabolus. Theyre the strongest cranks on the market, but you pay for that in money and weight (heavier than most steel cranks). if you want something a bit lighter and cheaper, go for '09 Shimano Saint. theyre very strong, relatively light, and not too expensive. the only cranks ive ever ridden and managed not to bend are Diabolus'. true, i weigh about 240lbs, im 6 foot 3, and go huge on everything i can, (completely destroyed Truvative Holzfeller on a 30 foot drop off :S) but still, if you want ultimate peace of mind in a crankset, get the Diabolus.