Your 4038ci pre-dates when AVR manufacturers started planning that the AVR would be obsolete in 8-12 years!
That you are upgrading now kind of confirms their decision!
I'm not sure what advice to give you on the AVR's you are considering, but wanted to let you know that from he standpoint of having a great power section, you are probably in for a down-grade!
As for features, it will be a clear upgrade.
Generally, I would say if you get any of the modern AVR's just make sure they have pre-amp outputs for at least the front three channels so you can use external amps. I also have a pair of Vistas and don't think you'll have a problem driving them with the AVR's you propose, but I use mine in the bedroom, so don't really open them up too much and don't do HT on them at all - don't have a TV in there.