Yes, exhaust means blowing on your hand behind the case. You probably won't need anything beyond that, if you're not currently experiencing any problems from heat.
Thermaltake smart fans would be fine, but I personally don't see the point to special types of fans. Just get a fan that blows some good air and isn't too loud, or a loud fan with a lot of airflow if you don't mind the noise. Panaflo L1A fans are quite good, they blow a decent amount of air and are essentially silent. The "Famous Brand" type you linked to before would work fine too, but I wouldn't know how loud they are or how reliable. Panaflo's are only 9 or 10 dollars, and are known to be reliable and quiet. Vantec Stealth fans are also spoken well of, and a lot of others that I just don't pay attention to.
Whatever you get, make sure the connector is what you can use. 3 pin connectors go on motherboard headers, while 4 pin connectors use the power supply cables like a hard drive. Some fans have an adapter so you can use either type. Panaflo fans also don't usually have RPM monitoring, so pay attention to that if you'd like that feature when using the motherboard connector.
I'm not sure about the Top Motor fans you linked. They're somewhat louder than is needed for this application, and so cheap that I'd be really concerned about the reliability. They're also sleeve bearing, which is less reliable overall than ball bearing.
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