Just bought a pair of monoprice monolinth stands for my Triangle Borea BR03 speakers. The stands are heavy and well-built. Am I likely to get noticeably improved sound quality if I fill the stands? If so, I think sand would be too messy. If heard about people using steel shot or aquarium gravel. Would these be acceptable? Also, kind of concerned that with the extra weight, I'll wind up with some pretty serious gouges in the carpet from the spikes. Would appreciate comments from those who have faced this issue. Thanks.