Had an opportunity to get a greatly priced 3-15 SWFA (B) on SampleList and tried to submit a trade in with some binos I'm wanting to move. Should have just bought it, kicking myself over that one.
Now I'm adding to the mix a couple different Viper options: PST on Europtic for $449 (probably gen1) but it is 6-24 which is not ideal for my use. The Viper on Midway is HSLR 4-16 ($329).
I currently have an HSLR on my 7mm hunting rifle. I haven't shot it much in the last year and a half because of the ammo shortage so I can't tell you how durable the scope is. Its zeroed at 100 yds and I dial for ranges between that and 360 yds, which is the limit for my property.
So far it has tracked well. I've only dialed about 120 shots though. I haven't dropped it but it's been knocked over the bipod twice on hard ground and jostled on logging trails. I've hiked about 25 miles with it slung over my back. So far it has held its zero.
The reticle is thick, which helps with low light visibility, but I wouldn't want it for precision shooting. The wind holds are nice and I've used them a few times for smacking an 8" steel plate in my backyard.
For hunting or shooting steel, I think the HSLR is a decent option at $329. Durability is my only concern. I plan on replacing it with a swfa 3-9 or Trijicon Accupoint soon. When I do, the HSLR will probably go on my 6.5 grendel.
Definitely consider the recommendations other people have given though. The swfa's, burris, and sightron are better scopes overall. It may be worthwhile to spend an extra $100-200, depending on your usage.
Good luck on your search!