Hmm, well there is an excellent review of the CA36K here:
http://www.airsoftcanada.com/showthr...highlight=ca36
The CA36 is just longer and has better range
And here's a nice review on Arnies for th eTM G36C:
http://www.arniesairsoft.co.uk/?filn...36c_review.htm
The choice between the two you've listed is simple.
If you want to play outdoor exclusively, pick the CA36.
If you want to play indoor at all (which JOC play a lot of) pick the TM G36C
JOC = Joint Operations Calgary. Look at the top of the page - Communities/Alberta/JOC
As far as 007, shop around and make up your own mind.