A Grand with a LR 510 atomizer is a fine vape.
A Grand with a RBA is even better. I'd say, for me, it was the same experience I had when I switched from cartos to attys.
Being able to easily replace a wick and coil for a few pennies rather than dip into a stash of $5 to $9 disposable attys (that may or may not vape worth a damn) is a no brainer.
Take advantage of the wonderful options available to you that weren't available when I started vaping in 2010. Get yourself some Kanthal, Silica, and an RM2. The atty and the juice are the weak links in getting the best vape possible from a Reo Grand. Rob took care of the atty issue. The juice is another can of worms.