1) .com are not available. Only .net are available.
Both .com are registerted by some good/big companies, however, they are using it as redirection, and these names are main keyword/phrase (keyphrase1.net & keyphrase2.net and no hypens in between).
Any suggestions? Do you guys think, I should still jump in for .net?
Depends on the primary source of the traffic. If you advertise on TV , radio, print and on the phone then a .com along with a non-hyphenated domain is appropriate. If you are marketing primarily online then anything goes pretty much. I doubt Joe Average only clicks on .coms in the serps.
I have had tons of my competitor's traffic sent my way because I have the generic .com, and they are pumping big bucks advertising a .net or .cc.
I figured this out after receiving an unusually large amount of emails complaining that my site did not contain the items "advertised in the magazine ad". The problem was that my competitor - not me - had placed the ads!