spend the extra money on the 2076 and you will have more time to look at the tank and not looking after it and hoping you don't flood the place every time you change the 2213 or 2217
Blimey. You must be doing something wrong with your Eheim classics then.
They are still fine, fine filters. Nothing has really changed in filtration. It's still a case of passing water through media. The Eheim classics do that very effectively and are astoundingly long-lived. Yes, they are a tiny bit more awkward to clean the media and get started than some of the more modern ones out there, but anyone with an IQ over 70 should really not be having a problem with it.
I use the classics exclusively. They are quiet and never let me down.
As to the OP's original quaestion, the key response has to be whether it is to be in addition to the Rio 180's internal filter (which is not a bad filter at all) or as replacement. Personally, I would go for an addition, rather than replacement.
If as an addition, then I think a classic 2215 would be just fine. If as replacement then I'd go for a 2217.
I run a 2217 and a 2215 on my 300 litre (which is fairly heavily stocked with cichlids) and they are a good balance for the tank volume.