I've owned a Sanrenmu 704 for a couple of months. I am very satisfied with the knife. It came with a good edge and it is easy to keep sharp. I really don't know how well the blade holds its edge because my kitchen knives are old fashioned carbon steel knives and they need touching up a couple of times a week so I touch up my edc knives at the same time.
The fit and finish on my knife was excellent. The blade was perfectly aligned and there is absolutely no movement when locked. The knife utilizes a thumb stud and the blade opens smoothly with little effort.
The grip scales appear to be G10. They look good but the checkering is very fine and very shallow. The clip has just the proper amount of tension. It is reversible, but I have found that one of the weaknesses in Chinese knives is soft screws and I'm betting that these are the same, so I will not be experimenting with the clip.
The design of the knife is what appeals to me most. It is a very simple and classic design, nothing new, fancy, swoopy, or innovative about it. It is not a "grippy" design and that might make the knife a little dicey in some circumstances. And the knife would leave any lefty owner unhappy and frustrated. But other than those two points, It is a fine edc knife for the average guy.
BigMo66 asks a pertinent question but a loaded one. No, this knife isn't as good as a $60 dollar knife because the $60 knife has better blade steel. This knife uses 8CR13MoV. But many of the standard makers offer knives using this steel, Spyderco, SOG, CRKT, etc. And the point is that the average knife user performing his day to day knife chores will not need and likely would not appreciate a knife with better steel. I have a few high dollar knives. I value and appreciate their qualities, but the truth is, for the things that I use a knife for, those high qualities and capabilities are largely more than is needed. It's like having a 500 yard rifle when all your shots are at 100 yards.