Keep in mind Litecoin is exactly Bitcoin with only a few minor changes. I really like Litecoin for the following reasons:

• Fairer distribution - Litecoin is probably the fairest launched and distributed coin; Bitcoin was launched when nobody knew about it so a few in early got loads of coins, while later altcoins often were premined or "accidentally" early mined in favor of creators (eg Dash)
• Faster block time - Confirms 4 times quicker
• Good mining distribution - Scrypt usage means a different field of miners than those with heavy Bitcoin ASIC advantage
• Good infratstructure - There are tons of coins, but not all are equal with support/infrastructure. Bitcoin is best supported because it was around longest. Litecoin probably comes in second.

For these reasons we decided to integrate both Bitcoin and Litecoin at TrustedCoinTrades.com (a LocalBitcoins.com but with added coins and no ID required).