I have mostly 3x9's, but NEVER wander around with them any higher than 3 power. If you need to shoot quick, it is not cool to have to look for the target.
I have a couple of 4-16's, but they are by 56mm so that they have a bigger field of view, better light gathering, and end up performing very similar to a 3-9. Never crank these up without a standing target, either.
I have a 2-7 for my slug gun (Mossberg 626), which is about right for the 200 yard and shorter shots that gun is lethally capable of. If I had a need to buy a scope for a .22 or a .17 HMR, I would buy one of these, but I usually just use my cast-off 3-9's from upgrades, as they are free, and the 3 power they are usually set at is adequate for any shot they need to perform on.
Whenever I can afford it, I go for a FFP scope.
Ballistic compensators are nice (I have a couple scopes with them), but if you know your gun and how it shoots, they are nowhere near as fast as your mind, and a holdover. Unless you plan on several hundred yard shots, I feel they are a waste of money.
I, personally, feel that the money should be spent on multi-coating and large objective bells. If you can't see through it, there is no sense in owning a scope.
That's my take on it - not a right or wrong, but the way I see it in my little world...