Look at the new line of Triton 18 foot Explorer's.
Triton saw this trend developing a couple of years ago and started to work on this boat package.

Now you can have the ride of a glass boat at the price of an aluminum! So basically you can have your cake and eat it too!
Right now they are on sale for $16,995! That is even cheaper than the Tracker Tournament V 18.
Here is the specs of the two boats:
Triton Dry Weight: 1202 Lbs
Tracker Dry Weight: 1152 Lbs
Triton Beam: 92 Inches
Tracker Beam: 87 Inches
Plus, Triton builds one of the best boats in the industry. So don't rule out a glass boat. You don't have to go with a big 20 or 21 footer to get what you want.
I'm running a TR-186 right now and love it. Easy to tow, great on fuel, rides great. This is my 3rd Triton now.