Is Avast! good with other programs?

I keep seeing people recomending malwarebytes and other anti-maleware and anti-spyware software. I was also told that having two Anti-virus programs can conflict with eachother. Would having Avast! and malwarebytes (for example) be bad or good? Currently I have Avast! Home edition and the free version of Spyware doctor. Any suggestions on a better (If available) Anti-spyware or If malwarebytes is any good?

Hello Plaza525

I was also told that having two Anti-virus programs can conflict with eachother.

yes, true.

Would having Avast! and malwarebytes (for example) be bad or good?

the two you have mentioned is really a good combination.

If malwarebytes is any good?

its good!

Other antispyware:

windows defender(oki)
superantispyware(good) but on demand scan only