Of the four or so pairs I've owned, I'm thinking that all have been either the Arctic Sport or the Woody Max. Honestly, I couldn't tell any difference in the two performance or comfort wise...just color. I think they offer a few short boots and "gardening" boots, but other than that, the original tall Muck boots are killer. The two things that impress me most about Mucks is the comfort and the incredible temperature range. I wear mine while working outdoors in July comfortably...and sitting in a duck blind in December with equal comfort! Some winters in the past, I would walk 10-15 miles on a Saturday through old cut trails looking for moose sheds... and was never bothered by my feet- even in these circumstances wearing them. I have tried Lacrosse, but didn't find them as comfortable- and seemed to heat up more in the summer.
Trust me bud, you won't be disappointed. The only downside is that the price has been creeping up the last few years...they are getting pretty pricey.