Everyone is going to vote for their favorite, so topics like this aren't usually too interesting.
After typing Colemak for around 3 or 4 years now, I'd like to say that I feel that alternation, emphasized by Dvorak, is superior to rolling motions, emphasized by Colemak. However, at the same time I have my quibbles with some of the letter positions in Dvorak, having first hand experience using it for a few months.
Workman provides a very different approach than both, and I believe the concept is very much worth consideration. Maltron is most interesting to me due to the use of the second thumb to press the most common letter.
At this point in time I'm considering trying to algorithmically choose a new layout based on concepts from all of these layouts. An extra letter on the thumb, using physiologically favorable positions rather than assuming that the inner home row keys are the best, and focusing on alternation.
On the topic of learning to touch type in a new layout, I would not recommend that site that was linked. I would focus on typing short, frequent words that use common letters. Eat, ate, you, etc. Muscle memory on small common words and parts of words will let you start using the layout faster, and will help you form larger words in the future. I.e. once you know how to type "eat" quickly, it becomes very easy to also write seat, heat, beat, feat, great, and such.
