AVtech Dvr's any good?

I see many of you have them and it seems like there is good support on the forum for them.

I'm just starting out with CCTV cameras, and I can't find any reviews on AVtech products.

I ordered a Q-See camera and would like to build my own system, rather than the bundles that I've read reviews on.

Are AVtech products reliable? I know the Q-See network dvrs have a lot of lockups and problems.

I have ATT DSL and would also like to know if there are any problems with email alerts with ATT's smtp server on port 445.

thank you for any assistance in helping me decide.