I don't have a top 10 anymore. Done so many over the years that I've put myself off a of of them, or just grown out of them. My list of 10, 20 and 30 years ago would read differently 
Now its:
1. MXE
2. Codeine
3. Benzo's - any ones
4. Tea
ps: used to be an uber stoner and stim slut, but hey my heart's not up too it these days and my mind needs to make me a living..

Now its:
1. MXE
2. Codeine
3. Benzo's - any ones
4. Tea
ps: used to be an uber stoner and stim slut, but hey my heart's not up too it these days and my mind needs to make me a living..