Completed the installation of the MegaSlam 672 without professional help. While the instruction manual does provide the basics, the two installation videos provided significant help.

Given the overall size (this is heavy duty / professional grade) - the installation was simple. Once the concrete base was poured, I had all of the parts organized and ready to go. Once the help arrived, we had the hoop up in about 2 hours.

I have two boys (8 and 10) and the reason to invest in the MegaSlam was to get a basketball goal that would hold up through the years and be ready when all they want to do is dunk with their friends in high school.

Finally - customer service was very responsive as I had a number of questions during the sales process.

The kids and I love our new hoop!

After taking up space in my garage for the past few months, I finally found the time to put the goal up. The videos and install guide are perfect. The prepackaged bolts with washers and nuts attached are a huge time saver...nicely done! The worst part by far is lifting the backboard up. We did it with four people. Two people lifting it, one person steadying, and another person putting the hardware on.
I'm very impressed with how it plays. Shots bounce exactly like they do at my university's gym. The whole system is built like a tank. I don't think it's unrealistic for this goal to last 20+ years.

Ended up getting the 660 which looks good, plays great and the kids love to lower for some dunk/play time. I weigh close to 200 lbs and it doesn't budge when I hang from the rim.
Heed the companies advice and get help for backboard install. My wife and I were able to do the entire install up to the point of the backboard. Had a group come over for the final step and was glad I did. Once it was up and leveled the hoop plays great.
Shipping was also above expectation as the driver was very helpful and courteous.
Can't comment on longevity. Appears to be well coated. The Minnesota winter will be a good test....