I know you have asked for oils, but I wondered if you have tried the Tui waxes? They are very good, and come in a variety of different size pots. I can recommend the one for reflexology, and I have used a few of the others for massages. They are hard in the pot, but once on you skin, they become really lovely to work with! They have a new website, which is [link=http://www.songbirdnaturals.co.uk]www.songbirdnaturals.co.uk[/link]. You can get very small tester pots, which are ideal to try out initially.
I love them, but they do contain beeswax, so you do have to check that your clients are not allergic to this or are vegans.
Tj