What is common about the two? CHKP is also Israeli based and also into security in a big way. Not the kind of security that MAGS is in but CHKP has a dominant position in Computer security where there is a huge market for those types of needs. The one thing I think CHKP has over MAGS is better financial fundamentals. Simply compare PE's and other financial metrics.
With that said I am long on both MAGS and CHKP. Both are looking good with MAGS being hotter right now but CHKP sitting ready for a breakout as well. If you look at the Stock Chart you will see that CHKP has not had the big run yet and has a much lower RSI level when compared to MAGS. MAGS looks like it has more room to run but CHKP might be one to look into before it starts the big run into Earnings later this month.
If the recent price action in Mags has shown traders anything it is that when trading this stock it is better to just buy and hold. Don't try to time the swings, buying and selling. I nearly sold my shares today when mags sunk between 2-3PM but I didn't and the stock went back up and I realized this kind of price action has been endemic to this stock and that the wisest thing to do is to just hold my shares and not get caught up in all the crazyness. I don't think anybody ever did well over the long run shorting stocks, certainly none of the posters we have heard from have ever been successful at it.