a 2000+ uscf player once told me that its perfectly fine to have a back-up opening for casual(possibly tournaments) be it OTB or online. Its great if you're having trouble with your main opening, or getting bored with it (as you said.) Although I wouldn't put too much effort into learning it though; learn a couple moves, and the opening's basic plan and you should be set. Kay, hope I helped!
edit: right, personal experience... I play both 1. Nf3 and 1.c4 since they're very similar, and as for black against e4 I mainly play 1... c5 but also try 1...e5 every once in awhile. Against 1.d4 I'm trying a whole bunch of things, so I'm not quite sure there lol.
Hi, I have a new question again:
Do you think it is right to always play the favorite opening in every game?
I normally have my own opening which I prefer the most, but sometimes I use it so much that it gets really boring, and after a while, I feel it doesn't work as well any more.
What do you do?
Do you have the same problems?
Moon...