I wanted to wait until I had actually used this reformer a bit before reviewing b/c I think people considering a lower-priced home reformer deserve to know what they're really getting.
I have quite a bit of experience with reformer Pilates. I used to attend studio Pilates regularly, often taking two classes back-to-back, 6 days/wk, so I'm very familiar with full-size studio reformers %26 what exercises are supposed to feel like.
For the price, I am impressed with this machine. I've been able to take full 50–60 minute reformer classes at home, including more athletic/strength-focused classes, and get a legitimately challenging workout. The carriage moves smoothly, is quiet, the machine feels stable while I'm using it, %26 I absolutely think you can get a great workout on it.
That said, this is NOT the same size or setup as a studio reformer, and that's probably the biggest thing to point out. The frame/carriage is quite a bit shorter. I'm only 5'3” and notice the difference on certain exercises. Some movements that use the full carriage travel have to be modified slightly, %26 I would definitely pay attention to the dimensions if you're taller than I am.
Rope length: took some experimenting. It hasn't prevented me from doing my workouts, but there was definitely an adjustment period while I figured out the best setup; sometimes having to adjust them or choke up more for arms.
Springs: the resistance is not necessarily intuitive. There is no guide as to what springs are what (heavy, medium, light). If you follow online reformer classes, you can't always copy the instructor's spring colors because studio machines vary. I had to learn my machine and start choosing resistance based on how the exercise should feel rather than the color the instructor calls out.
One limitation I really wish I had known before purchasing is that there is no attachment point for a foot strap which anchors your feet for some movements. I bought a strap separately and found out the hard way. I wish the manufacturer included an attachment point (even if the strap is sold separately) b/c those exercises now have to be modified or skipped.
Who I think this is great for: Someone who wants real reformer workouts at home without spending thousands of dollars, understands that a budget home reformer will have some limitations, %26 is willing to make small adjustments when following studio-based classes.
Who may want something else: Someone taller, someone who wants the exact dimensions/travel of a commercial studio reformer, or someone who doesn't want to modify anything when following classes filmed on Balanced Body/Merrithew-style equipment.
Overall, I'm very happy with what I got for the price. It has allowed me to get back to doing the type of workouts I love, and I use it everyday! I took off 1 star because of the shorter size/carriage travel, slight rope limitations, and lack of foot strap attachments. If those things were improved, this would be an incredible reformer.