I owned the 383 for a year and enjoyed it the whole time. I got caught up in reading about audio and convinced myself I needed a change.
The 383 is an absolute joy to use, excellent design; it is a great performer as well. I found it very musical and never fatiguing, a joy to have on all the time.
I had talked with another person that said they found the performance to be nicely improved by upgrading the power cord, his words were something like, "it can sound bigger than it is...". As someone who just purchased his first aftermarket power cord, I can attest to the enhancements they add.
It's well known that separates give the most flexibility, but having the single unit is nice!
Someone above mentioned the Mac MA6900, I read, or rather skimmed, the comments of Sam Telig in Stereophile on this integrated and he was very pleased with it's performance; if possible try to listen to it as well.
I believe with some careful shopping you could meet or exceed the 383's performance at the price, but ask yourself "how you listen". If you spend most of your time between the speakers "critical" listening, you "may" want separates. If you spend a lot of time with it on while doing things, not just sitting between the speakers, the 383 may be perfect.