Obbligato (via DIY Hifi Supply) are tightly wound polyprop capacitors available in copper jackers or normal. For budget capacitors they are some of my favorites.
As mentioned above, I would also check out Michael Percy. There are also several capacitor threads comparing different brands. Google "capacitor shootout" and "capacitor comparison".
As mentioned above, I would also check out Michael Percy. There are also several capacitor threads comparing different brands. Google "capacitor shootout" and "capacitor comparison".