This machine is very well put together, and Xtremely sturdy. It took a friend and I two hours to put it together, so be prepared for that. While assembly was a bit trying, the end results are worth it. As a 40 year old man, I wanted to start working out again. I hadn't worked out since my Memphis State days, and I didn't want to join a gym. I have the 410lb model, and it will be all the resistance that I'll ever need. As I said earlier, the motion is smooth and challenging. While the power rods do deliver tough resistance, it is not challenging as free weights. For example I can bench press 300lbs on my X2, but on free weights I can do only about 240lb. That is a big difference, and all the exercises are that way too. That being said, I still find the bowflex to be a great homegym and I'm getting the results I desire. I'm not trying to get as huge as a wrestler, but the bowflex is changing my body and adding mass. Don't pay attention to the bowflex commercials, where the guys are ripped to the bone. That just won't happen on a bowflex machine, and I'm glad they've started showcasing real people with real results. For the average man or woman, this machine will deliver. With around 100 different exercises and variations, you can target all your muscles:legs, chest, arms, abs, back, and shoulders. I'm very please with the 10 months I've been on the machine. Though its kinda pricey, its worth using my tax refund on it. If you are thinking about a homegym, the I highly recommend this machine. You should also upgrade to AT LEAST 310lb rods, because the leg exercises are pretty easy and you'll need the extra rods. For guys, I think you should get the 410lb rods because you'll see rapid results. I've gone from benching 220 to 300lb in less than a year. There are cheaper machines, and free weights will give you much better results. But if you're looking for an all in one machine, that will last for years, then try the Xtreme2!