dowan wrote:njvack wrote:
All things being equal, a rough balance of EV and AC is better than an imbalance.
Huh? If I have 30 AC and 30 EV, that's balanced. If I put on a ring of robustness and have 38 AC and 30 EV, that's imbalanced. It's obvious which one is better though.
Did you mean a rough balance of dodging and armor skill? Or that 50AC 10 EV is worse than 25AC 25EV?
I believe the actual meaning of the quote was "given that the total of the two remains the same, it's slightly better to have more similar AC & EV than it is to have a ton of one and almost none of the other"
The truth is slightly more nuanced though, for a given creature, both AC and EV have a peak performance per-point (berder actually made some good graphs here in the forums that give you a good idea of the shape of things, if want to find those and care enough)
So for example starting at 25 AC, 1 EV, it's actually more effective for most creatures to go to 26AC, 1EV than it is to go from 25AC, 2EV. Because 25AC is closer to peak efficiency for AC for most creatures (in terms of damage reduction), and 1EV is very far from peak efficiency for most creatures, however the reverse is *also* true, going from 1AC, 25 EV, to 1AC, 26EV is better than going to 2AC, 25EV.
However that's an extreme example, a more normal example is "I am at 50 AC, 10 EV, do I wear a +6 protection ring or a +6 evasion ring" In that case, 50AC is *decreasing* in effectiveness and 10 EV is *increasing* so depending on exactly where you are in the curve and what you're fighting, either one could be better, but in most cases, it will be the EV.
And as it happens, for the majority of instances of AC and EV, in the majority of games, adding points to the lower of the two options is the way to go, unless one is "extreme" and the other is "average"
I, personally, rather than figure out exactly what's optimal in all cases, shoot for "my AC and EV should be optimally be around the average HD of the creatures I'm fighting, or my XL+5 if I'm too lazy to figure out that number" That is to say, if you're XL15, the closer AC or EV is to 20 the more effective it is. I personally estimate an effectiveness of 2 for "close to my target" and 1.0 for "extremely far away" so for XL15, if you're at 50 AC and 10 EV, I would probably rate 50AC at 1.0 and 10 EV at 1.5 and therefore estimate that a +6EV ring would probably be slightly better than +8AC ring (given that I couldn't use both for some reason)
More points is usually better than less points however, if you are too lazy to do even my rough approximation then probably go for "more close together is better than further apart for the same total amount of points between the two, but go for the larger number of total points in most cases" this will only rarely lead you astray, and not by enough to make a large difference in any case.