Your investment horizon is a little too short for the stock market. If you have a "decent chunk" already and plan to hold it at least 5 years, then you get I-Bonds and have a guaranteed no loss of principal and an inflation-linked interest rate. Right now I-Bonds are paying 4.8 percent interest which is pretty good for an investment that can grow without being taxed each year. Keep in mind, with I-Bonds, you can't cash out the first year you own them if an emergency arises (unless there is a federal declaration of emergency where you live). If you've held them more than 1 year but less than 5 years, you can cash out but you lose the last 3 months of interest (the same penalty as most CDs). After 5 years, you can cash them with no penalty.
Here is the link:
http://www.publicdebt.treas.gov/com/comi0505.htmYou can buy them at your bank if you have trouble buying them online. For an investment with NO risk of loss of principal and a small guaranteed return on investment -- plus the advantages of deferred federal tax on gains and NO state/local tax allowed on these gains -- I think 4.8 percent is a damn good interest rate these days.
You absolutely want the savings to be there when you need it, and this way you can have safety plus keep ahead of inflation and taxes.
And
NO TRANSACTION FEES!!!!Savings bonds are not glamorous but they may be the way to go for short/middle-term savings. I highly recommend the I-Bond.
The conservation movement is a breeding ground of communists
and other subversives. We intend to clean them out,
even if it means rounding up every birdwatcher in the country.
--John Mitchell, US Attorney General 1969-72