I haven't had much opportunity to test all the Re-Habs I purchased but here's a brief run-down of my thoughts so far:
Roses: A lovely rose oil but have decided to save it for next summer, as I don't think the current climate will do it much justice.
Aroosah: This was a favourite at the beginning but I've now concluded that white florals aren't really me. I enjoyed wearing it but not as much as I wanted to. Still a good one.
Aseel: Definitely Red Aoud but much smoother. Loved wearing it and received a couple of compliments. Current favourite with great lasting power.
Sondos: Wearing this today and am a little disappointed. As a sweet woody scent, I'm finding it underwhelming - it's almost like Aseel but less strong and without the interesting notes. I thought this would be a firm favourite but have been proven wrong.
Btw, I've long ditched using the rollerball method and have resorted to smearing my arms, torso and neck with between 1-1.5ml of oil per application. The results have been excellent so far with, largely, great longevity and sillage. As the oils are very cheap, why not?