I have owned my 2017 Corvette Grand Sport convertible since September 2016 and now have 9,260 miles on it. The first 2,000 miles I followed all the recommended break-in procedures (it takes a lot of willpower to keep that machine below 4,000 RPM for 2,000 miles!); since then I have driven it on every winding road I could find between Texas and Florida - by way of northern Alabama, Tennessee, North Carolina, South Carolina and Georgia - and then from Texas to Colorado and back. I think I have a pretty good understanding of the car, and I can tell you that nothing I have ever driven even comes close. And I have owned and driven some fairly high-performance autos in the last 50 years.
The Grand Sport comes with the "low" powered engine, with "only" 465 horsepower and a similar amount of torque. Of course, it is no match in raw power for a Z06 or some other pricey iron (Nismo!), but on a winding track (or road if you're into playing stupid, life-endangering games) there is very little that can stay with it short of a supercar of twice or three times the price. The suspension is pretty magic under those circumstances, and the overall impression is one of well-contained explosive power combined with a very calm dynamic over the road. "Bump-steering" is only a bad memory, and turn-in and tracking are just unbelievable - especially if you've driven some of the older 'Vettes or the new Z06 under track conditions. Even on wet roads the handling is precise and predictable, although the 10- and 12-inch-wide tires front and back will hydroplane at relatively low speeds through standing water. And I had to wait for summer to take the trip to Colorado, since no one manufactures snow tires or winter tires for that size wheel. Probably best to stay out of the snow and ice anyway.
By the way, reviewer LB is wrong about the garage opener and heated seats; mine has both, plus ventilated seats to keep your derriere cool in summer. Maybe that's not available on the Stingray, I don't know.
The downside? The convertible has only about 14 square feet of luggage space (the automatic folding top folds into the trunk and uses maybe half of what would otherwise be available - but then again it is automatic, and you can furl and unfurl it at speeds up to 30mph). The seats, while reasonably comfortable in the new configuration, are still not world-class in terms of both comfort and lateral support - but they are like night and day compared to the old (bad) Corvette seats; and if you really want support then Recaro seats are available as a pricey option. And of course if you need a second row of seats you'll have to get the "disguised family Corvette" by which I mean the Camaro of course, although you'd probably be better off having a stolid family car and adding this one for sport and fun. And as I mentioned, this is not a car well-suited to winter driving on ice or snow. Oh, and be prepared to spend some time getting used to ingress and egress techniques unless you've driven exotic iron before - it's low and crowded getting in and out. And the car would really benefit from full-time rear-view cameras.
Other than those little grouses, I've found very little not to like about this machine. Well, unless you are bothered by people asking you questions and telling you what a beautiful car you are driving at stoplights quite often. I can live with that...
I would recommend this car to anyone who wants world-class driving performance at a bargain price, and can live with two seats only. By the way, reliability has been flawless so far, but the extended warranty is so inexpensive it's silly not to add an extra year or three to the three-year chassis warranty. Unless of course you're planning to sample the new mid-engine Corvette when it hits the streets in 2019 or 2020.