It's not very common for pointed pellets to be highly accurate.
Ok, I've gotten to where I don't like discussing airguns much with non-airgunners, but I'll put in my 2 cents.
A lot of people decide that they want to use airguns to practice because they're convenient. They're practicing so they can be a better shot and probably shooting to have fun as well.
Then they go out and buy a piece of crap because they don't want to spend very much money--after all, it's just a BB gun, not a REAL gun.
The problem is that a piece of crap airgun isn't very much fun to shoot so they shoot it a little and then they put it away and when someone asks them about an airgun in a few years they say that they tried it once but didn't enjoy it much.
If you buy an airgun to practice and you're really serious about it, you'll probably shoot it more than you shoot your guns. So why wouldn't you spend enough on it to ensure that your practice time is enjoyable instead of low-balling the airgun and practically guaranteeing that you won't stick with it?
Other shooters look at me like I'm crazy when I tell them what some of my airguns cost. I don't even try to explain anymore that an airgun must do everything a firearm does but it must also generate the power to move the projectile. I've given up trying to tell them that of course a good quality airgun will cost as much as a good quality firearm or maybe even a bit more.
And somehow they never put my airgunning together with my shooting ability--even though I finally started handicapping myself in our shooting competitions so that I didn't win every match.
If you want to buy an airgun to practice shooting, get a good one or don't waste your money. Spend it on ammo and range fees instead. They'll be a lot more use to you than a "bargain" airgun rusting in the closet.
If you want to buy an airgun to pop the occasional varmint that shows up in your backyard then buy whatever--it'll probably get shot a few times a month or a few times a year--anything will work for that.
And if you want to find out what a good airgun is, don't ask a firearms forum--usually the most enlightening advice will be to either buy something for $25 bucks, to get the most powerful model on the market or to be careful not to shoot your eye out.
Here are some places that will give you good advice.
http://www.network54.com/Forum/79537
http://www.straightshooters.com/chat/