I have never used the "Chef's Choice" models so I can't compare them.
I will only say that; think of the slicer as a tool. You don't have to buy the most expensive slicer, but look for durability and yet powerful enough for practical use.
You can check local Hobart dealers and you can get factory rebuilt for about 1/3 of the normal price.
Also check craigslist.org for great deals as businesses close down.
Humphrey's DownEast Beast W/BBQ Guru