When the missus and I got certified I purchased Dacor Vipers for the both of us from ST as part of our newB gear starter package. 2 years ago I bought a Delta 4 and put my 2nd stage Viper on a 19cf pony bottle with an aftermarket DIN first stage since it has no up or down. I love my Delta and as of today have 299 tanks under my belt. The wife 96 on her Viper. My question is this; the wifey is perfectly happy with her reg. Ignorance is bliss. I know it breathes OK but I want to get her a better reg. Should I wait till she gets a few more tanks under her belt or pull the trigger and get her an easier breathing unit/