Just my personal opinion and without going into to too much detail - Avoid them. The more basic your scope, the less problems you'll have, and the easier it will be for you to shoot. A scope has but one purpose only, and that is to aid the shooter in aiming the rifle more accurately at distance. I even find hand held rangefinders to be an anoyance in the field. Just one more thing to be lugging around. Use a range finder everywhere but hunting, because it will train your eyes to judge distance more reliable. The sight-in your scoped rifle for it's maximum point-blank range. Once your eyes are trained then you can hunt without having to haul a rangefiner around.
I also forgot to point out one very important thing that every hunter/shooter should consider. A rangefinder on a rifle scope makes for an easy temptation to estimate range on objects that you may not intend to shoot at that particular moment. Glassing of object using the rangefinder feature on your scope is a direct violation of the rules of safe firearms practice. Never point or aim a firearm at anything that you do not intend to shoot. Always keep a firearm's muzzle pointed in a safe direction.
Alright,.. I feel the need to jump aboard on this.
I'm one who favors the rangefinders,.. I have 2 range finding reticle scopes along with a hand held rangefinder. When I go out West hunting I like the hand held unit so I pretty much know the distance the critter is at and not guessing. I've got the 600 Yardage Pro model and I chose that one specifically because there would be no way I'd be shooting at anything over 500 yards anyhow
So why is there a 1000 yard model??
My 2 scopes are a Mil-dot reticle with windage dots, The one is a Leupold 4.5-14x56 VXL Longrange, and the other is a fixed Springfield Armory 6x40. I personally am very comfortable using the mil-dot range finding reticle scopes as I had a lot of opportunities with them in the military and they came to me pretty naturally. There's nothing wrong with a person using one and the accuracy of ones shots are by far superior to those without in so much as being more proficient with your shots guaranteeing pretty much a clean viable kill at those longer distances. I personally won't take any shot over 400 yards and I practice continually at the 300 yard range and am VERY proficient at that distance. Now If someone was to guess at a yardage thinking their target was at say 250 yards and took the shot to find out that the shot was actually 325 yards depending on your ballistics for that caliber you could be off your target by 6-9 inches. ,)
In that scenario, most of the hunters I know would usually hold over a bit "just in case" but by doing that you could have gone from a possible clean miss low to a low hit wounding your animal and not killing it. Not the way I hunt.
I'd much rather KNOW the yardage at any given point in time as opposed to guessing. I know my rifle,.. it's ballistics for any given load that I load and shoot, along with my own personal capabilities and shortfalls.
And when it comes right down to it,... isn't THAT what it's all about ? Assuring yourself a clean kill ?
I have always looked for ways to save money and gain skills. I have the firearms basics covered so I rarely buy firearms these days. But I do watch for bargains. Sometimes a little TLC with simple tools will let you bring an old gun back to life without investing a lot of money. One such find was a side by side 12 gauge marked “W. Richards” It is not from the fine English gun maker Wesley Richards, it is a cheap knock off copy probably made in Belgium about a hundred years ago...