WHICH CHRONOGRAPH DO YOU USE FOR AIR GUN

I have used many of the light sensitive Chronographs. Found most to be hit and miss...either work through the session or start throwing errors. I did the lighting kits and just wasn't satisfied. I ended up spending the extra money to purchase the Magneto Speed V3 Balistic Chronograph. First set up was a trial and error but now that I am familiar with each of my different barrel and shroud configurations I am very pleased. Most of all the unit is adjustable for sensitivity. This is a real plus when shooting the smaller .177 calibers across the chronograph. It has not failed to register a reading, registers and saves the readings electronically, has an SD Card that can be pulled to place on the computer, registers all the data needed (pellet size,weight,fps,sd,es,fpe,etc). I load that data into chairgun or other ballistic software to print to my range cards.
There are other top end Chronographs (Oehler) that I have used and at the range but I find by attaching the Magneto Speed to my rifles, pistols and air guns I do not interfere with others at the range since nothing is out in front of me and we are not shutting down the firing line because I am messing with a chronograph set up out out in the firing line.
I will say that large powder burner does create a lot of heat at the muzzle and was concerned but the support from the company were right there to assist and sent me what I needed. Very well designed and very adjustable. Hey even the sniper guys are now using the Magneto Speed V3.
We have had days at the range where we set up an Oehler Chronograph and allow everyone some time checking their weapons. These are very accurate units and with the computer and printers do a great job as well if you have the money and time. But like I said the Magneto Speed is becoming the more popular unit for those I am associated with at the two ranges I frequent. As a club we have 2 older Oehler units and post the months and days we will set them up for availability. The Magento Speed I can also go to my backyard with the Marauder or Bobcat, do my shooting and scope adjustments and then kick back with a libation of choice when finished.
Just my input guys.
 
I think chronographs that attach onto a gun's muzzle are great in that they offer extreme portability and ease of use. If you are a typical user who only needs one to determine mere muzzle velocities, then chronographs from companies like Combro and Edgun are perfect. If, however, you plan to obtain velocity readings from a range of distances other than from the muzzle—which is especially crucial when you are trying to fine-tune the BC or find out the energy of a projectile, for example—a standalone unit is the best option. I think this is one main advantage to having a standalone unit. Some chronographs are designed for specific applications though. You just need to determine which type is best for you and more reliable than the others. 
 
Thanks airborne. By the way, I apologize for not being able to post a photo of my chrono setup with the LED puck lights the other day. However, pbguns' LED light setup as shown in his photos is identical to mine. The way the lights are mounted on the bottom of his chrony's sunscreens is the same way mine are--the light shoots down toward the sensors. 

Nice setup by the way pbguns!