What is the best sounding, inexpensive, iPhone docking station out there?

What is the best sounding, inexpensive, iPhone docking station? I know you sometimes get what you pay for, but I'm between upgrades. Please see below.

I have a 30 pin iPhone 4. My work has asked if I want to upgrade to the newer iPhone 5, but I thought I'd hold of for the new iPhone 5S or 6 which has the Lightning connection.

Is there a docking station that sounds pretty good with the 30 pin connection to get me by, or is it best to get a more expensive one that has the Lightning connection and use an adapter with the iPhone 4, 30 pin to get by?

I'd like to spend $30 to $70 to get by, but willing to go into the $150+ range if you think using an adapter is a good idea.

It would be great if it had a CD player, but not a deal breaker by any means.

If i were to wait for the next iPhone models and the lightning connection, I'd probably stick to a cheap dock for the iPhone 4 while I wait since it's only temporary.

Here are a few options for iPhone 4/4S docks up to ~$30:

http://www.amazon.com/...0053Y5OOK/

http://www.amazon.com/...004C04P9Q/

http://www.amazon.com/...003Y73QX4/