The Chariot Sr. and Chariot Jr. are no longer made. The new Chariot and Chariot LX are their replacements and have many added features. Here are just a few:
1. Redesigned heavier frame
2. Redesigned heavy all 7 gauge deck
3. Ability for optional wrap around controls
4. All new 72" deck
5. Many other design changes that make that make the machine easier to maintain.
I hope this answers your questions. We appreciate your interest in the Great Dane products.