Re: Shot timer
The PACT CLUB III is a great timer. It's pretty loud though (I shove a pair of foam ear protectors into it so it wouldn't disturb the old lady, neighbors, etc) and it is very durable. I loaned mine out when I left on rotation, the guy I left it to lost it, I found it on the 500yd line, and it still worked after having sat in the sun in Iraq, and getting rained on and left in the elements for 6 months...they're pretty tough, I brushed the caked sand off the battery and it ran fine.
The CED7000 is smaller, and rechargeable. It's nice and small, and I've thrown some velcro on it and just stuck it to my gear, hat, whatever an it works well and has a long life once charged. Hope this helps.