Pros: nice power for anything that use 12v, great power for more power-hungry devices. stable voltage output (11.9v-12.3v), auto volt, so no worry about burning it. no variation in voltage from 110/220 outlets.

Cons: cheap look. on plate says "samsung" but i don't believe that. power cord that came with it is the worst ive ever see (but you can change, so is not that bad) but the power out cable are also bad. too thin for 5A. ground pin of cable is not connected at all.

Other Thoughts:

Bottomline: need a good power supply? this one is nice. i will take another one probably ;)

Pros: works just fine! faster card reader than my 24" monitor with build-in card reader! works with my old's mmc also. reasonable battery time. easy to use/charge/carry around.

Cons: internal parts are kind of "bad-fixated", sd card fits with face to bottom, and if you try, it will enter on the wrong side also. some mp3 musics start playing with half speed, going forward/backward solves it. could use a mini-usb, instead of a micro-usb. manual is for another type of player, so its useless. i miss repeat/EQ options

Other Thoughts:

Bottomline: cheap for basic usage, crazy mods, or gift.

Pros: cheap, extensible, stable, low weight, small to carry around, does what is supposed to do ;). you can release the screw on the bottom, and rotate the tripod for better position for better support.

Cons: almost all plastic, if you force a bit, may break some part. for light stuff only, don't try heavy things on it. if you use it a lot, and keep "moving" the parts, it start to get loose on the fixation parts.

Other Thoughts:

Bottomline: good for fixing something "light" still, nothing more. but it does just fine for the cost. ;)

Pros: some parts of it are made from a "fiber", hard to break. mine have crashed a lot, no damage at all. came with a spare propeller for the back motor. stable when still in the air. acceptable range of controller (can fly very high)

Cons: hard to control. you have to compensate for every movement. go up,it will turn left. go down, it will turn right. go forward, it will turn right. go backwards, it will turn left. no specific spare parts can be found, nor a "kit" for replacement parts. battery time is too low. after 5-8 minutes become "weak" and slow to go up. usable only on indoors and outside if there NO wind at all. any wind, ANY, will pull it away. controller is 6x AA battery, no 9v as adversed. if you charge until the charger says "battery full", is not full at all.

Other Thoughts:

Bottomline: great to experiment, play, have fun, and crash a lot ;P
if you like the fun of a helicopter, may be a good idea to get a "big" one, like the lama ones, with spare parts and replaceable battery and components.