Storage is also a plus point for the Waterrower series as they are all designed to stand upright with the tank acting as ballast for stability. In this position they only take up around two square feet. Again, great if you are planning on training in the living room. However, if you have small children, I would advise fixing the top to the wall with a hook and strap.
* While there is nothing to adjust from row to row on the WaterRower, it is possible to increase or decrease the level of resistance by changing how much water you put in the drum. The monitor is pre-calibrated to match 17 liters of water, but you can change that if you want. More than 17 liters = more resistance, up to the max fill line. This is not something you'll want to change frequently, it's more of a set-it-and-forget-it thing.
Being able to easily store your rower is a huge plus. Make sure you investigate how well the machine stores, if it folds up or comes apart easily to be able to put it in your closet, or in other storage areas. As an example, the Concept2 Model D rowing machine folds up nicely by a simple pull pin located in the middle of the rower. Wheels on the bottom allow for easy moving.
After reading so many fantastic reviews I purchased the Classic model. Before I write what I think are the negative aspects I'll say that it gives a great workout! That is pretty obvious and I don't think that part is arguable. The disappointment began while unpacking. The wood parts were wrapped fairly well and did not have damage but there were several scratches that I had to sand out and re-oil. It appears that they were there before shipping. Putting it together would have been fast and easy- except 2 of the bolts were bent at about 15 degrees and would not fit. I had to wrap with tape and bend with vice grips. After getting it all together the rower worked well for about a week. I started to notice an annoying kind of popping sound from the left rail as the wheels rolled over on each stroke and recovery. It seems the plastic that the wheels ride on is not flat or adhered well to the rail. It isn't very loud but I can hear it well and it gets my attention, spoiling the nice sound of the water. Really disturbing. Support at WaterRower would like a video of the issue. Seems like an obvious issue and could swap out with a rail that is good instead of me trying to make a video of this small sound while moving the seat back and forth. For a $1500 machine the quality control- or lack of it is disturbing. Having to jump through a bunch of hoops because they are too cheap to just send a part is even more so. Perhaps I am being difficult but it is upsetting to have something touted as so great but put together like a $200 piece of junk. Another complaint would be the lack of any back lighting on the monitor. Really cannot see it if the lights are low. Being able to remove the monitor to attach to a PC wouldn't hurt either. While it gives a good workout the rower really suffers from poor manufacturing.
As previously discussed, the rowing machine’s big advantage is that it provides more than just a cardio workout. It can definitely help you build muscle and lose weight. Compared to a treadmill, the rowing machine works most of your body. It will really hit your shoulders, core, quads, hamstrings, glutes, arms and back effectively while being low impact thus reducing the stress on your joints. Bigger muscles need more energy and will burn fat to get it, which of course leads to healthy weight loss.

This popular rowing machine utilizes magnetic resistance for a quiet, and very smooth workout. The Velocity Exercise CHR-2001 also features a programmable computer with 12 programs that will keep your exercising varied and challenging for years. The computer also provides data on distance, time, calories burned, pulse rate, strokes per minute, and stroke count. Additionally, the tension resistance is electronically controlled via the computer.  This electronic resistance control feature puts the CHR-2001 ahead of other magnetic rowers that tend to use knobs.

From a fitness perspective, the WaterRower Natural works 84 percent of your muscle mass, helping tone and strengthen your muscles while burning far more calories than most other aerobic machines. The exercise is also low impact, as it removes all the body weight from the ankles, knees, and hips, but still moves the limbs and joints through a full range of motion--from completely extended to completely contracted.