I will not say anything on the Badger 150 as I don't like its grip ( I
don't say I don't like Badgers, it is only the 150 ) only that you
should follow our chaps advice to send it to Badger so they'll fix it
for you.
About the Evolution, I can tell you that you will be delighted with it.
I own several of the older models and I see you got a Silverline. Did
you take the 0.15 needle/nozzle set ? It is very nice to use.
Tell us about your feelings when you use it.