I am looking for opinions on these lines of Monitor Audio speakers. I currently have the Silver 5i mains and 10 Center and would like any experiences with these and/or the rest of their Silver/Gold Series. I might be interested in upgrading these to a larger driver speaker. Would there be much of a difference to doing that within the Silver Series to the overall sound? Maybe a more natural low end than the 5.5" drivers the Silver 5s have? Would the Silver 8s with the same driver size be much of a difference or would I have to jump to the Silver 9s for the 6.5" drivers to have that fuller, more natural low end? I am using a two HK PA5800 Amps to drive them with a Denon 3300 as the Pre/Pro. Thanks in advance for any info you can throw my way. I havent listened to the Silver 8s or 9s yet.