I have a sennheiser mic, a shure bg 1.1 mic and a fender mic.
What you sugest me to use in my home studio.

It depends completely on WHAT you're recording, WHERE you're recording it, the SOUND you're trying to get, and the rest of the GEAR you've got...

Your question as it is, is liking asking "How long is a piece of string?"
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Bruce Valeriani - Mix Engineer

Use all of them.

Studios pride themselves partly on how many and what kind of mics they have. Start your collection, because using different mics will broaden your sound.

Absolutely. Use them all. Without naming specific manufacturers or models, build yourself up a good variety of "workhorse" dynamics. They're reliable and fairly rugged, and with them you'll learn the value and importance of microphone placement ... and matching a microphone to a particular instrument or voice.

There are also other choices out there beyond "cardioid," too. Don't forget them.