Clydesdales/Athenas (200+ lb / 91+ kg) - Cheap track crank vs. Expensive track cranks

I recently destroyed yet another set of cranks, a set of Bulletproofs (incidentally the Salsa chainring was unscathed! those things are tough.) when I was really torquing to get through an intersection on my fixed gear. Now, my dilemma is this, a new set of Bulletproof cranks is ~$40. However, I'm guessing I'm going to get another 3 years out of these new cranks, same as the last set. I just found a set of Sugino 75's for ~$200. Should I spring for the Sugino 75's that I've wanted for years now? Is it worth it or will I still need to get another set in 3 years like the Bulletproofs? Any of you guys used Sugino 75's for a long time and know how long they last? Only reviews I can find for Sugino 75's are by 120 lb hipsters who take them to the coffee shop and back or 120 lb track weekend warriors who ride them once a week.

The byline here is that if my wife finds out I bought the Sugino's she'll be less than thrilled, but if I can tell her that I can get more than 5 years out of these things she won't be as angry.

Thanks guys.

Pic of destroyed crank?

I'd like to see the damage to assess what caused it. Cranks don't just fail for no good reason. I'm 240 pounds and I ride long distance on hilly terrain using my fixed gear; and it has a 105sc crank from 1991, with short bolts and a single ring at the inner position.

Here's the crank with the spider tabs ripped off

I think it was just from use. I had over 3000 miles on it.

Silly question:

You don't run your chainring on the inside of the spider for a better chainline, do you?

Nope, run them on the outside. It might also not help that I'm very fond of track stands. I end up putting a lot of torque on these babies.

I've thought of going for a pair of old road cranks, but last pair I tried just felt too soft for me.

Nope, run them on the outside. It might also not help that I'm very fond of track stands. I end up putting a lot of torque on these babies.

I've thought of going for a pair of old road cranks, but last pair I tried just felt too soft for me.

I didn't think you did, but on the ss/fg forum I've seen stranger (dumber) things happen so it never hurts to ask; especially seeing the mount tabs snapped right at the shoulder brace like that. The only other time I've seen that is when a ring isn't properly bracketted on that shoulder (as it would happen if mounted on the inside.)

Anyhow, since you say you're trackstanding quite a bit, I'll guess you're a right-foot-forward guy. Drive side pedal at 3 o'clock and you stomp it out of the blocks when the light goes green. Could be why the two tabs on either side of the crankarm were the first to go.
Now, the 75s are expensive but they're also designed around track racing and have the NJS stamp. I know that NJS just means that it meets Kierin standards blahblahblah, but they certify things for strength on the track for the safety of their racers. I've never heard of anyone, little hipster or quadzilla the track professional, breaking a 75 crank.
A less expensive, but still strong option is the Sugino RD2 which is the track version of their JIS square taper standard RD road crank.

Wow! Got me good on the riding style. I was thinking the same thing for the 75's...now if I can only convince my wife of the same thing....

After much soul searching I've decided to go with the new SRAM S300 crankset. Looks like the SRAM Omnium cranks but with 6061 Al instead of 7075 Al. I found them for wicked cheap on eBay. I think I'll try these out and see how they hold up. Hopefully, by the time these cranks die I'll have a job that affords me the luxuries of life...like really nice cranks.

Thanks Clifton!