I don't know your speakers but, other than the Rotel, the balance of your system is considerably better than mid-fi.
When it comes to cables it is very personal. Some people claim to hear huge differences. Others claim to hear subtle differences with concentrated listening. Others claim to hear no difference. You really need to listen and decide for yourself if they are worth the cost. Don't buy based on a review or the opinion of someone else. I think there are differences but I don't believe anyone who claims to hear orgasmic differences between cables. I believe they are deluding themselves to justify the expenditure in their own mind. Just one man's opinion.
When it comes to cables it is very personal. Some people claim to hear huge differences. Others claim to hear subtle differences with concentrated listening. Others claim to hear no difference. You really need to listen and decide for yourself if they are worth the cost. Don't buy based on a review or the opinion of someone else. I think there are differences but I don't believe anyone who claims to hear orgasmic differences between cables. I believe they are deluding themselves to justify the expenditure in their own mind. Just one man's opinion.