agree with the cymbals...there are ways to improve the sound of your drum kit like tuning, muffling/tone control, head change, etc., pero sa cymbals what you hear is what you get ika nga, yun na yun...so, the only way to improve the sound is to upgrade them...mas flexible din ang options sa cymbals, pwedeng 1 piece at a time depending on what's available sa market and your budget...sa kit mahirap gawin yun, kailangan sabay-sabay.