I do not own a 17 Classic. I do own a few newer Smiths with the hole. Not an issue for me.
In .22 I bought a very nice used M18, 4" barrel and 6 shot. Very accurate. I then bought a 4" 617. 10 shot, newer model. Very accurate. My neighbor then bought the 6" 617. We had it at the range Sunday. It seemed to be shooting a bit high even with the rear sight cranked all the way down. In 617 I prefer the 4" for balance, he likes the long sight picture.
The first S&W I purchased is a 6" Nickel 25 Classic, 45 Colt. That gun is very accurate. I put a Wolff spring set in it with the reduced power main spring and 14 pound rebound spring. Stoned and polished the innerds. I can break clay birds on a bank at 60 yards. Not every shot, but often enough to be fun.
I have a few other newer S&Ws and a few older. In K frames I like the 4" for the handiness, 6" for the sight picture. I was thinking I'd get a 17 after I bought the 18, but now with the 617 I like the 10 shot capacity so much that I doubt a 17 is in my future. I have put Wolff spring kits in most of my Smiths. The 25 Classic is the only one that runs reliably with the reduced power main spring.
On another note, I find the full lug look less appealing than the lock hole. The 617 is my only full lug Smith. The look that really matters to me is the sight picture.