My husband purchased this for my birthday (at my request). It arrived quickly but when it was assembled it did not run. The incline did not work, the motor would not accelerate and it was very loud. We have called customer service numerous times but it took 2 weeks to get a repair man to come to our house even though the unit was defective from the first. Once the repair man came he determined a bar on the bottom of the treadmill was bent and cracked and unable to be repaired. We now have an unfixable treadmill sitting in our master bedroom waiting to be returned.

This is a great alternative to the more expensive brands. Be aware that the fit is tight so the velcro will be loose on the connections. With a strong strobe, there won't be much light loss. With speedlights, they'll pretty much have to fire at full power all the time.

For its huge size it doesn't give you that much more information than you already know but the tricks and tipps that it has are totally worth the price. Also the tests are a great opertunity to practice.