I spent quite a bit of time looking for either an exercise bike or rowing machine, looking at all the reviews, prices and features (on a number of sites) before settling on a rower and the DKN R-310 from Sweatband. The feature set for the price is incredibly good value and it's a very sturdy machine, delivery was top notch and assembly took me about 30 mins.
My only gripes so far are that the seat doesn't seem contoured enough (at least not for my backside)so i keep sliding of the seat, i solved this with a grip cushion. The other minor gripe is a lack of distance measurement but it's a minor issue that i can work around. A week in and it's been a pleasure to use, recommended.