The Redwood is much better than the Anser. The Redwood as some say is the Anser's big brother. Learn to use the level +44 Redwood and when the time comes you can then upgrade to the level +72 Redwood which is either the best or second best putter in the game depending on your preferences.
The level +44 Redwood and the Anser have the same meter speed so that shouldn't be a problem for you and it has 1 dot more precision so it goes where you aim it much better than any of the lesser putters. I'm not sure about the scale differences if any because I never used the Anser. But the scale of 15-30-45-90-150 and 300 is fairly easy to learn and for me it is the best scale of any of the putters. If you are a aim and hit the ding type of putter then with this putter you should just start sinking more putts. But if you are the miss the ding type then you will have a learning curve before you start putting well.