i use cinema4d yes and it does everything i need it to do. its modular to so you dont need to buy everything at once. i did think about getting modo last year due to loving the quality of the renders coming straight out of it. at the end of the day its down to you mate its not about which one is better (in a way) its about how it fits around you and the price ;) download the demos and give each one a week. btw i have used 3ds max since it was in dos and it was my first true love till i went to my mistress c4d

edit: cinema 4d is a powerfull aplication and has been used on many a film one reason it could be more popular than modo and the other could be that modo is a new kid on the block and has had less time to build up its user base than the others inc c4d