If you look for cost effective signature code to choose among multiple choices then conducting a competition for that must be a good idea and that is the tradition here.
Decide your budget and escrow your funds. Start a signature competition. Good luck.
If OP look for a signature for his personal use, then conducting a completion will be meaningless as personal usage will not have big budget usually. Without knowing the budget I fear to suggest any veteran designers here.
Anyway like many people here, I too wish OP must land in competition for the purpose of having a signature campaign.