Step up from Nakamichi 582 tape deck?


Have an option to acquire a very good working order 680zx.
At present have a 582 and was interested if those in the know would consider it to be a worthwhile upgrade?

Or would I need to go even further up the food chain? Zx-7 or 700zxl or?

I have just purchased a massive lot of tapes at pennies per tape so do not foresee me forsaking this medium anytime soon .. Lol.
128x128uberwaltz
I went with the 680zx although he also had a zx9 for sale but that was a LOT more money, much more than I am prepared to spend on a cassette deck.
We will see when it shows up in a back to back comparison with my 582.
Not yet, I missed the Fedex truck yesterday and it needing signing for.
Now I am away all next week so I imagine it will either sit in some Fedex storage or end up being returned as undeliverable.

Seller is NOT answering email requests to change delivery address to have it held at a local Fedex location, like Walgreens where the wife could collect it from after work.

Oh well my problems but was looking forward to a comparo but not to be for a while... lol.