Hollows and Rounds excel in the versatility they allow. They give the user the luxury of options, countless options.
Three moldings. The largest is from yesterday's blog. The middle size is 2/3rds of that. The smallest is 2/3rds of the middle. Feel free to go larger, smaller or anywhere in between. (I scaled the Google sketchup images to 0.67% each time.)
Holding these in my hand makes me want to build a tall case clock. You can imagine all of these, and more, encompassing the case from floor to finial.
If you like the luxury of choice, if you like things being exact, if you like putting your hand to your work, check out some hollows and rounds some day. They will change your product and your methodology of work. They may even captivate your attention for years.
Depending upon where your interests fall, you may be happy with a close option that you're already able to produce. To each his own.