Things I liked:Good quality for the price. It is a good scope for air rifles and 22. rifles. The optics aren't as good as high dollar scopes, but I'm an old guy and can't see iron sights anymore and the scope allows me to shoot very well again. I bought 3 of these, two for cheaper air rifles that I thought were'nt very accurate. It turns out they are very accurate. I can tear the bulls eye out shot after shot with these scopes on them. I doubt you can do better for the price. Things I would have changed:Nothing, for the price you get more than enough. I'm very happy with my purchase. What others should know:Check and tighten the two rail mout screws often. You can tighten them with a Nickel coin. It took a few shots for mine to fully seat. That is no fault of the scope. I think it's normal for grooved receivers in general. You can also make adjustments on the scope with a dime coin. It's a great bargain for backyard plinkers and if you're and old guy like me it let's you shoot like a kid again.
Things I liked: I like that it can be passed down for generations. My first one was bought 22 years ago. I put a new seal in it a couple of years ago, when I tore it down to lube it, but it really didn't need it. If you want an air rifle to shoot and give to your Grand Kids, this is the one. It is very accurate, and powerful enough for small game. I have several 34's and many magnums of RWS and other brands. The 34 is the best air rifle out there for the price. After market kits are available, that can make it more powerful, or more pleasant to shoot. I doubt any gun has this much after market support. I have guns that costs several times the cost of a 34, but I still enjoy shooting the 34. It is still my go to gun for the varmints in the back yard. Things I would have changed:New ones need to be lubed properly from the start'and often come with little or no lube. It seems a little barrel end heavy. Many of them have barrel droop, and some have plastic triggers. The plastic triggers don't break, but I like metal better. None of this is a real problem, and many wouldn't notice, but it is a negative. With all that said, I shot mine happily for over 20 years, without knowing how to lube it properly, and never giving a thought to the plastic trigger,or realizing it had one . Then I got deeper into air guns, and learned about the plastic trigger, and barrel droop. Spend a little more and buy a Diana 34, and you will never regret it. What others should know:You should know, if you buy other brands, you may not be able to buy parts for them. They are consumables. The idea is you will buy another one, or it will last till you outgrow air guns. If you outgrow a Diana 34, just put it away, and when you turn into a kid again in your golden year, you can shoot it, or maybe it will need a seal and a lube job, but it will still give you pleasure in your old age, and then your Grand kids can shoot it and pass it on.