Best Coin To Buy As An Investment Right Now?

I agree with both statements.

With apologies to those who may disagree, my advice is to not invest in coins. You should only buy them for pleasure.

For what buy gold when the price are at the top ? Do you really thing that the value will increase indefinitively ?

Buy bullion when the price are low.

, chefhemi13!

Spend $500-1000 on coin books and read them cover to cover (especially the intro pages).

No matter how good the advice you'll receive here, starting with a $1000-2000 coin, you're cruisin' for a bruisin'. It only takes one mistake and you're out of the game for a LONG time.

Coins are a collectable, not an investment. After reading all those books, you'll understand what to buy, and more importantly, why.

Difficult to say only one coin. However, here is a suggestion. Puchase a Red Book by Whitman Publishing. Scan through all the popular collector type coins for mintages. My reasoning is the proportion of people in the near future compared to quantity minted of coins will sort of determine what you should, could, might, possibly buy.
For example any coin with a mintage of less than one million will possibly be considered rare in the not to distant future. Our population in the USA has now exceeded 300,000,000 people and if only 1% of those collect coins, still more collectors than coins of the less than one million variety.
One problem with the above method is popularity. For example a 1912S Liberty Head Nickel has a mintage of 238,000 and barely exceeds $2,000. Comparitively a 1916D Mercury dime had a mintage of 264,000 and values go up to well over $30,000.
So to sum up what I was attempting to say is it's all just a guess anyway. Remember this is a hobby, not an investment tool.