Product review (4 stars): Surprisingly good cooktop
This is a great range for the price. Actually better than ones costing double. We've been using it for 2 months. It cleans easily. The grates are heavy! with heat resistant rubber feet so they always set properly (flat) on the stove top and no issues setting them on counter tops with scratching. The only issue, and other have had this, one burner is hard to light. No matter what you do, it sparks fine, gas comes out but it won't light. Researching the fix. We did notice that the chromed aluminum burner ring will get dark spots when hot grease gets on it while in use. A bit of elbow grease and a good chrome polish will fix that in a couple of minutes. The variety of burner outputs is super handy. We decided on this configuration because others told us that the layout with the burner in the middle, it's hard to use the others when in use. We can put a large pot on the big burner and still use the others. And that big burner can boil stuff fast!
Yes the stainless top is thinner metal than others. Not an issue once installed. The total depth of the unit is exactly what we needed to allow for a drawer under the cooktop.
So far, so good.

Update: July 2018
The unit has held up well. We throw the grates (well carefully lift..they are beefy) and put them in the dishwasher to clean. No discoloring or rust thus far. We are having the same burner lighting issues others have experienced. The solution is counter intuitive. Set the burner to it's lowest setting while lighting and it works fine every time. The flame sensors are not as sensitive as we would like. If you don't hold the knob in the start position once lit, for 15 seconds, the flame will go out. Some where down the road, replacement of these with better quality flame sensors might fix this. It's minor in the scope of things.

Cleaning has been easy. Lift off the grates and the burner assemblies, pull the knobs and you have an easy, accessable cleaning area. We use Windex and a sponge, wipe down with warm water and a hand towel. Occasionally I will use some stainless spray cleaner and polish. After a year of use, it still looks great. Well, accept for the area we learned not to use the scrubby side of the sponge.

The unit's biggest 2 issues are: the stainless surface scratches easily and the aluminum burner rings are now black. DO NOT clean hard to get off grease or whatever, off the stainless surface with the scrubby side of your sponge. It will permanently scratch the surface. This tells me that this is not great stainless metal. The burner rings appear to be cast aluminum that is machined. Any grease that gets on them will burn in place and leave the ring spotted black. This is a bad use of materials on their part. I am going to get them power coated and that will fix the issue.

The burners all work great and the big on boils a big pot of water darn fast. I brew beer and this will take hot tap water to a boil in half the time using any of the other burners...or any other stove we have had. Monster BTU output. 5 burner cooks tops always get crowded when they are less than 36" wide. But having the big burner on NOT in the middle, makes this cook top way more useable with multipul  post and pans going at once.