The Iwata Revolution HP-BCR

Information

Desire for Iwata quality
Desire for lower price
Great for beginners

The HP-BCR is sold in Hobby Kits because it's a great starter airbrush.
Forgives paint consistency mistakes
I like pointing people toward an Eclipse BCS first since they're easier to clean, but the HP-CR beats the BCS on price.

External Micro Air Control Valve
Pistol Grip Moisture Filter

This accessory doesn't always fit when you use large bottles. Of course you can simply fit the bottle in a little off-skew and it'll be fine.
Pre-set handle

If you're gonna spray the same amount time and time again, the pre-set handle helps you do this without tiring out your finger.
Quick Disconnect
Table Top Cleaning Station

The HP-BCR is an excellent siphon feed airbrush.

All in all the Revolution BCR does a lot of things well. I know artists that switch from other, more expensive airbrushes simply because the Revolution "does it" for them.
It's a great workhorse airbrush.
They're great for beginners who don't want to spend a fortune but still want something made to last.
They're generally easy to work with and replacement parts won't cost you an arm and a leg.
The HP-BCR is also packed in quite a few different kits. Sometimes there's a compressor sometimes there isn't.
Highly suitable for multi-gun setups, though the Eclipse BCS is still more popular. It's amazing how nice of a feature that self-centering nozzle is.

Tip Dry

Tip dry sucks. It's also unavoidable when you spray. You can try chemical methods to reduce it (use a slow reducer for your paint--though that might not be an option depending on the environmental conditions you're spraying in). Or you can use mechanical means...other wise known as cleaning it off yourself!
- Approved Tip Dry Removal Method
- Unapproved (though common) Tip Dry Removal Method
Clogs

The smaller the nozzle, the more often your airbrush will clog. To avoid these clogs make sure you strain and thin your paint.
Weak Nozzle

Weak isn't quite the right word. The nozzle is fairly strong, however, you're stronger than the nozzle. This means that if you over tighten it it WILL break. BE CAREFUL!
Bent needles

It's common, and it's your fault. If you remove the needle cap to spray finer details you'll eventually bump the needle tip into something.

The good news is that if you feel mechanically adept you can try repairing the needle yourself.

The bad news is that most people don't do so great a job their first time repairing and polishing needles. You'll probably want to go purchase another needle and possibly keep a spare around if this ever happens again.