Which Circuit Simulation Software Should I Use: Orcad Pspice or NI Multisim?

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Orcad Pspice or NI Multisim? which software should I start learning for simulating circuits? which would be beneficial for my future? or any other softwares?

 

[gnurf]

I like LTSpice, and judging from posted images here on the EE sub-forum, many others do too. It's free, lightweight, and is not restricted in any way.