Hi again,
You are certainly welcome
If you are looking for very low forward drop, you might look into the Zetex Schottky diodes. The 2 amp rated ones have very low voltage drop, the lowest i've seen for Schottky diodes. What they do that is different im not sure, but it might have something to do with less impurities in the die. But if 0.5v is good enough then the 1N5817 or similar should be ok. The 1N5817's are good for up to 1 amp, i think the 1N5823 is 3 amps, but there are a number of them in that line with different reverse voltage ratings.