Arts is a good reverb, however not a convolution reverb. Think you do good with having the possibility of both Art and QL Spaces as they cover reverb from two different angles. Looks from your software list that your are mostly into orchesteral music, where I think that QL will be the best choice. I prefere a couple of other convolution reverbs that have an open profile so you can load 3. party IR’s. Think I use Waves for most reverbs. My all time favorite, Wizooverb is sadly not supported anymore. Please come back if you need help with QL. However I need to say I still do not know exactly what the problem is.