I have built my own and kits. Years ago Speakerlab had some of the best kits around. Now they have a very limited range.
Parts Express has quite a range of kits, excellent components, though I have not built any myself.
If you don't mind cutting your own wood, building the cabinets yourself, you can get the driver/crossover kits for the various offerings from
www.pispeakers.com. These are excellent designs with very high performance components. Right now I am about to start construction of a pair of 4pi Theatres (15" woofer + horn tweeter) for myself, a pair of 7pi-18 corner horns for my older son (3-way corner horn with 18" woofer, 10" woofer in a mid horn, and horn tweeter), and 3pi Theatre (12" woofer + horn tweeter) for his living room. Wayne Parham at Pi Speakers will send you the plans via email at no charge. You may buy components elsewhere, or buy his kits, which I recommend. You would have difficulty buying the same components elsewhere for his price.
Factory and customer built Pi speaker pictures:
http://www.pedalforroses.homestead.com/Speakers.html
You could also look at the Project Showcase at Parts Express. There are a number of customer designed projects, with complete plans and crossover information. Many have response graphs and very thorough design history. Some are quite simple, some very complex, such as the Colossi feature on the cover of their current catalog.
http://www.partsexpress.com/projectshowcase/index.html
You can end up with speakers far, far better than those you could buy ready made. And they need not look "home made". There are a number of ways to finish your speakers. It is up to you.