Model Railroading > Help deciding on a modern O scale transformer

Fellow model railroaders... the time has come to bite the bullet modernize my transformer situation. I have read many favorable and a few negative comments on the Lionel ZW-L transformer and also have seen comments recommending the Z4000 transformer.
I'd like to go with my gut and get the ZW-L, but having made more bad decisions in the past than I care to count, I would like to hear from users of each to see what you might recommend.
Thank you in advance.  
Bob Phelps

I ran an original (250W) ZW for 20 years without a lick of trouble. Switched to a Z4000 about 12 years ago and again no issues.  Since aquiring the 4000 I run mostly (95%+) DCS and the balance being conventional.

Never had a ZW-L so I can't comment.

Cliff Rutherford
Grain Valley, MO

Thank you for helping. I am going to go with the Lionel ZW-L, despite it's high price.