I recapped my IIsi using these parts from DigiKey
220uF 25V (you'll need 2)
47uF 20V (you'll need 11)
Now those 47uF caps are pricey, because they are solid polymer versions, so they'll never leak. But they're expensive. I like them because they look the same as the old ones, so my board keeps that stock look. But we can cheap out by using tantalum like these ones.
The linked Digikey cart below contains all of the surface-mount Color Classic Motherboard Capacitors along with a few spares for each part. These were perfect sizes and values for my Color Classic motherboard. As stated in my above quote, the size C capacitors are largest -they also seemed to fit best for many of the larger surface-mount capacitors. Sizes B and A are better for the smaller (and tiny) capacitors.I have bought all of my capacitors from Digikey.com. When buying, it takes a little extra time to pick capacitor value, brand, and size. They are definitely a reputable source as a large company with many customers. MacCaps.com has listings for many computers showing exactly what capacitors to purchase. In general, as long as the capacitance is the same between old and new capacitors, voltages that are higher than the original capacitors are fine. I would recommend sticking with surface mount tantalum capacitors in the A, B, and C sizes. (C is largest A is smallest) Anything smaller probably will not fit on the circuit board.
http://maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html
The linked Digikey cart below contains all of the surface-mount Color Classic Motherboard Capacitors along with a few spares for each part. These were perfect sizes and values for my Color Classic motherboard. As stated in my above quote, the size C capacitors are largest -they also seemed to fit best for many of the larger surface-mount capacitors. Sizes B and A are better for the smaller (and tiny) capacitors.
http://www.digikey.com/short/qq1z81
Yup - that works. I can see the whole cart now.The link for the DigiKey cart is slightly glitchy. (it makes a suggestion to buy more capacitors for a discounted price) If you click "View Options" under options, and then click add, the correct cart will be displayed. (it contains two other capacitor types)