In general large gauge cables like Purist are the ones that will give you high capacitance. If you are into DIY you can simply choose a high capacitance cable of your choise and solder the plugs. You can also choose, lower capacitance starquad cables and if you wire them properly you will get quite high levels of capacitance.
There are also some small cable manufacturers who can make excellent cables based on your specifications.
There are also some small cable manufacturers who can make excellent cables based on your specifications.