Level 4 in the Morrow Audio line is the sweet spot in both interconnects and speaker cable. That’s where I started. Eventually moved up to level 7. Excellent! I found them to be fast, open, transparent and quite musical. Very well made and easy to place, unlike some garden hose brands. Do not let their modest weight dissuade you. Break them in quickly, as in, 24x7 for two weeks. That will give you two weeks to listen and form an opinion.
**As always everything is system dependent.