Great for backlighting
I use 5 sets of these as backlighting for my band's stage, and they are GREAT! Flexible, they can either be tripod mounted, truss mounted, or floor mounted as uplighting.
It should be noted that the videos here are of the regular 4-Bar system, not the Flex. The Flex does not come with a stand, (the stands are pretty cheap anyway), and has a pass through hole permitting multiple units to be mounted on a single tripod (a major plus for flexibility). The 4-Bar is a top-mount only unit. The lights themselves are identical on both units.
Using a pair of these as opposed to eight single units has multiple advantages. First and foremost, set-up time is significantly faster. Secondly, you do not have as many wires coming out the back so it looks much cleaner. An third, two units (8 lights total) only use 2 standard controller fixture channels, as opposed to eight. This is very important if you want to program complex chases where you need individual control over each light.
The footswitch controller is adequate for many uses, but to utilize the full power and flexibility of this unit one really should use a DMX controller. BTW, a single footswitch can power multiple units...just connect the footswitch to the nearest unit and Mic cords or DMX cords out and in to all the other units.
DMX or MIC CORDS?
While I typically use true DMX cable between units for my setup, I have used these lights with standard mic cords without any problems. If you start looking at more than 100' of cable run you should probably opt for DMX if possible, but I have controlled them using a standard 100' Whirlwind audio snake with no problems.
Remember that while the XLR connectors are identical on both DMX and mic cords, the cable itself is different. While mic cords WILL carry DMX signal fairly consistantly, please do NOT try and use a DMX cord for a mic cord...it will significantly color the sound or introduce noise.
In the last 7 years I have only had to use a terminator on the last fixture once, and that setup had close to 300' of cabling all daisy chained, (no splitters).
I only have three complaints. First and foremost, the cases, while adequate, are very cheap, the zippers break easily, and the cloth sides split if you look at them crosseyed.
Second, they are not really bright enough for front lighting except for a VERY small club. For fronts I use the Chauvet 4-Bar Tri, which produces MUCH brighter and more vibrant colors, (at a additional cost of course)!
Finally, these lights are really only effective for short throw applications. Viewed as backlights they are great, (particularly with haze), but they are only really bright for about 10-15 feet or so, and then drop off significantly.
Despite these few negatives, the overall value of these lights is exceptional at this price. In terms of flexibility, ease of use, and clean appearance, you simply can't go wrong with them, which is why I own 5 sets and plan on purchasing more.