I bought 4 of these to replace the factory door speakers in my 2004 Toyota Tacoma 4-door pickup. The original speakers were toast and I had replaced the head unit with a decent JVC putting out 20 watts RMS about 2 years ago. These speakers put out really clear highs and mids but little bass. I was not expecting license plate vibrating thumps, but a little depth to the sound was expected despite the size of the speaker cone. I played with the internal EQ settings in the head unit, but at low volume levels it is still rather tinny. I'm upsizing the rear speakers to 6x8's and am considering a powered sub. A powered sub may be the perfect recipe, but these speakers alone, even with the aftermarket head unit, just don't cut it for full sound. All that being said they weren't that much per pair... and required no mods to the door panels to install.
Pros: Clean install, highs, mids
Cons: Sound fullness, bass quality especially at low-mid volume levels.