Well, you now have host of options.
Athlon
Gramin,
Caldwell
Labradar.
These are your "best options", as there are a few smaller lesser know ones, but these are your best bet.
Athlon, $599, Garmin, $799, Cladwell, a few hundred, Labradar you can get $400(the old units), they also have a new one out, but not upto speed on the $$ of it or if it is out yet.
Athlon is supposed to be like the garmin, and from what I have read on it a good choice. Garmin is the best right now. The older larger Labradar were finicky some times and a bit of a pain. I looked at these for 2 years and just couldn't pull the trigger on them. The new labradar are supposed to be good units as well, right up there with the Garmin units. The Caldwell, well you can read the pain on using and setting them up all over the web.
Saying you need one to shoot out to distance is like saying you need an automatic powder dispenser to load for long distance shooting, and is just ludicrous. Can it help you get to distance quicker, again a stretch of ones imagination. I was shooting out to 1000m with 2 different rifles before having a chrony, and doing hand loads using a beam scale. Still use a beam scale, as I feel the auto scale is just not money well spent for me yet. You will need a good program though to run your calculations with, and possibly a bit more ammo to get out there without a chrony. If you shoot lots, and shoot out to distance beyond 500m yes the chrony will help get you there a bit faster than without one. I had set up all my hunting rifles without one, and was comfortable to shoot out to 500m with out much thought with any of them.
The chrony was the same, for a while, then I realized I will need one sooner or later and was already searching for the best option out there when the Garmin went live. Was just the best option for the best price out there when I bought.
I do use the Garmin when making up a new load for a rifle, especially because I want to be able to push the projectile at a necessary speed so I can get the distance I want from it to still be lethal on game. Take for instance the 450BM I aquired before season last year. I was able to push a 290 gr copper tip at 2265 fps, and with that knowledge and further calculations I know I'm comfortable to push the limit out to 350m for a decent killing power out at that distance. I also use the speed to figure out my adjustments on the scope to shoot at distances like these with it.
If has a 39" drop at 300m with a 100m zero. If I don't know this I clearly miss game, and that is never an option. Can you figure this out without one, yep, but it is a bit faster with one, which is less components used to get there. Plus the speed lets me know I have enough knock down power at 300m to be comfortable on game with it out at that distance.
I also use it for my distance shooting. I know that my 6.5 CM was running at near max pushing a 139 gr projectile at 2950 fps out a 26" barrel. Did I need a chrony to tell me that I was groping with max pressure, nope, but it was sure nice to know the actual speed I was at while doing it. I was also able to use the data from the chrony to change my reloading routine to get my numbers dialed in for distance. Numbers like "extreme spread", and "sectional density" so I can be reliable out at distances past 1000m.
Now that I have one, I use it for everything, and used it to verify all my previous loads for the hunting rifles I set up before I had one, so in the end it has paid for itself, for my uses.
Does everyone make use of the features of the chrony, nope, and I know that even I don't use it all to its full potential, but I'm getting there slowly.