I would like to know regarding the best simulator for simulating circuits.

[yg.7]

Actually i have many Ic's bought from Texas Instruments,ST,Analog Devices etc.And i have to evaluate my circuit before making it into design.So please help me in selecting a good simualtor with all recent devices and ics libraries available with it.

[MikeDB]

If you mean for power devices always use the vendors own tools. Too many nuances to program in yourself. I find the TI tools the best.