This review is from the hobbiest perspective for intermittent home use. I have previously had an older Delta and newer Makita 12" benchtop planer. I decided on this Grizzly 15" planer because of price and with specific goals in mind.
First I wanted to cut noise and the shelix heads are known for the noise decrease. What can I say? It's true, especially I assume due to adding the link belts when I switched out the head. It takes 3 of the 60" belts. I use hearing protection because the noise with the dust collector (louder than the planer) is slightly uncomfortable. None of that howling bother the neighbors noise that the benchtops put out though.
I wanted to eliminate much of my sanding time without buying a large sander. Yep, that goal is met. I've just done a bit of work with some curly maple, teak, quarter sawn white oak and lace wood. If the piece doesn't need thicknessing I just measure the board, set the depth for a short 1/16 th less and run it through once. Just takes a couple minutes with 150 or 180 grit sandpaper to eliminate the grid marks from the roller on the planer. Depending on the wood these are virtually impossible to see or slightly noticable after planing. They are the only marks so far. The helix cutting ability without tear out has been much discussed and my results have been excellent so far.
Dust collection. I found a 1 HP jet collector on Craig's for $90 and added their canister filter. Collection approaches 100% but again I'm a hobbiest making things like a window frame with the teak so results may vary.
Portability. Easier than I anticipated to move it around, no more trouble than the router, easier that a table saw.
Snipe. Very little. It took about 3 boards to work this out. I just feed firmly following the wood with some pressure for another 10 seconds after the grab and provide a gentle lift pressure catching the board on exit. What little snipe I had on one of the teak 1x4's dissapeared with the 150 grit in a sanding block.
Shelix installation, I purchased the head through Grizzly when buying the planer. I have not done much machine/engine work since the VW bus I had in '72. I was quite concerned about screwing this up. I printed the generic instructions from the shelix site and marched out to the garage with them and the manual. There was nothing I didn't get or could not accomplish if I messed with the step long enough. I broke it up into short sessions, after work and so on, took a week probably using 8 hrs time. I could do it now in 3 since I now am familiar with how this thing goes together, someone used to working on machinery could beat that. No bearing puller or specialty tools required.
Hope this helps someone,
Larry