I am contemplating wall mounting the VAC center channel above my tv.  With the VAC weighing in at 20 lbs., is the OmniMount 20.0 model sufficient to support that weight since 20 lbs. is it's maxium capacity?  Or would it be prudent to go with the beefier OmniMount 30 just to be on the safe side?  I'd hate for the VAC to come crashing down on my tv. 

thanks.