I purchased the Grizzly Track Saw Master Pack and an extra 55" Guide Rail (track) several weeks ago and I find it to be an excellent product. My main motivation in this purchase was for better saw dust control and I find that it reduces the amount of saw dust at least by 95% over my old circular saw. I did find that attaching a vacuum hose (1.25 inch) was a bit of a challenge but I purchased a Shop Vac extension tube and cut the top section (8 or 9 inches) from it. This section has the friction fit for the vacuum hose's nozzle and I have held it in the swivel on the saw with electrical tape. So I can easily attach or remove the vacuum hose now. It would have been better if the swivel on the saw had fit directly.
The saw was easy to set up and after I locked down the adjustments for proper tracking, they have held that adjustment for over a month now. The depth of the cut can be easily adjusted in fine increments and I like that. This would be very nice when cutting a slot. The Allen wrench needed for these adjustments and for changing the saw blade was supplied with the saw.
I did find that the spring that retracts the blade out of the cut is a bit too strong. It takes too much force to keep the saw down and that makes it harder to control the cut. But the saw does work well, in spite of this. A lighter spring would be nice and I am searching for one that will fit. I may have to make my own.
My main complaint about this saw is the blade supplied with it. It is a 48 tooth, carbide blade with alternate rake teeth, apparently for cross cuts. This is fine and the blade seems to be well made, but the sharpening leaves a lot to be desired. The teeth have a rather rough finish and the side rake is not very large so it splinters the edge of the cut a lot. I have had to use wood filler on every cut I have made in plywood with this blade. I have tried pre-scoring the wood and using some masking tape on the wood and it helps, but does not eliminate this splintering. I have purchased a Freud blade with identical specs and it is like night and day. The teeth on the Freud blade have a mirror like finish and it leaves a completely clean edge, even without scoring or using the masking tape. I am going to try to see if a saw sharpening shop can improve the original blade so it is not a total loss.
Another area for improvement is in setting the position of the cut. There is no mark on the saw or provision on the track for positioning the track in relation to the desired cut line. I am thinking of making some kind of gauge pieces that can be attached to the track which will be exactly on the cut line. This should be easily done by just making them oversize and cutting them down with the saw itself. All I need is an aluminum magnet. :-)
A nice feature is the electric cord. It is not overly short as too many are today. I have a small shop and have not had to use an extension cord with it yet. Big plus. But, of course, your mileage may vary.
Overall it is a good saw and I like it. I am sure I will be using it for many future projects. Compared to other track saws that I looked at, it is a great value. The blade supplied with it is not good and I can not recommend it. If you buy this saw I recommend that you also buy a good 160mm diameter, 80mm arbor size, 2,2mm (3/32") width blade to go with it (suggestion: Freud # LU79R006M20 or Grizzly #T24416).