The Good: Crank has at least 10 years of life and is still at almost 100% from a brand new bmx crank. Titanium spindle upgrade reduces weight and also increases durability.
The Bad: I have had to replace the bottom brackets a couple times over past 5 years, but its an easy and cheap fix.
I have had this Profile BMX crank on my Black Market Riot (Dirt Jumper hard-tail with 26" tires). I can't think of one negative comment regarding this crank as it has taken a pounding over the years from a 180-200lb rider constantly riding trails and jumps of any size. I did upgrade the spindle to the titanium Profile GDH Ti Spindle Upgrade Kit which saves 3.15 Oz compared to the original chromolly version. I have taken my bike all across Texas and this crank has handled everything from pump tracks to Downhill trails in the Hill country. It keeps my bike a one speed which saves weight and ease of use and once you get the right teeth size for the front sprocket and rear cog you will have the perfect setup to rip up a BMX race or blaze the trails of a rocky mountain. The crank arms aren't smooth anymore as they have been beat up over the years, but this hasn't affected the integrity of the product at all. I ride hard, fast, and fly high and this crank has met all my expectations over the years. I run 25 tooth sprocket with a 12 tooth cog in rear on a Chris King hub. Bombproof!!!!!