I can confirm that the best stock over the years has been FIRST BANK.
I bought a total of 129,000 units over a period from 1999 to 2000 at weighted average cost of =N=13 With bonuses over the years the value of those shares have appreciated by more than 600%.
The worst stock ever has been WEMA followed by DUNLOP.
Incidentally, I sold the bulk of my holdings in Dunlop in 2000 and used the proceeds to buy FIRST BANK which has now done so well.