Which way is faster? If elseif or select case

Question

For the following code,

If Sheets(\"sheet1\").Range(\"A1\").Value = \"option_1\" Then
    Sheets(\"sheet1\").Range(\"A1\").Value = \"option_2\"
ElseIf Sheets         


        

Answer 1

1. Case statements are supposed to minimize the number of times the processor attempts to change its command location. Doing so will cause it to waste clock cycles until the correct commands are referenced. Unless you're writing something that needs to be extremely optimized you won't notice the difference.
2. I lean towards case statements because they are easier to read. (less to read => easier to read)
3. If this is the exact data you are using, you can split the value on '_' and increment the last digit 'mod' the highest value possible. Combine the strings back together to get your result.