Gen1 has become my preferred G17. I love the wrap-around pebble texture on the grip. Nice find!! Gen1's in nice shape are few-and-far between. Most were beat to hell by LE agencies and then traded in. I latched onto two Gen1's in nice shape (one nicer than the other), and they will likely enjoy permanent residence in my safe. These guns, along with Gen2's, will be especially prized until Glock embraces the fact that not everyone wants grips with finger grooves and thumbrests.
Gen1 (G17), Gen2 (G17, G19), Gen3 (G19, G21SF, G26, G39), Gen4 (G19)
Glock Advanced Armorer (AA), Glock Instructor Workshop (IW)
Remington 870, Benelli M1, Smith & Wesson 3000, Mossberg 500