Emphasis (Even)

Where まで sits relative to the verb.

～まで～て vs ～てまで: てまで marks an extreme someone went to in order to achieve something (借金してまで買う), usually with disapproval. The まで〜て ordering is a plain limit instead ('up until X happens'), so the disapproval is not carried over.

Citing a striking example to make a general point.

Noun ですら vs Noun たりとも～ない: Use ですら: 専門家ですら間違える. It picks an example so unlikely that it proves the rule. たりとも is absolute negation of even the smallest quantity (一日たりとも忘れない) and needs a negative verb, so it cannot host a positive example.

The 'even' has to land on a に-marked element.

Noun にすら vs Noun ですら: Use にすら where the noun would take に (子供にすら分かる). ですら fills the subject or topic slot. Same emphasis, different case marking, and the wrong one leaves the particle missing.

Saying something exceeds a benchmark that was already high.

Noun にもまして vs Noun ですら: Use にもまして: 去年にもまして忙しい. It is comparative, so it needs a standard to beat. ですら only nominates a surprising example and makes no comparison of degree at all.