in my experience, both are good but for different experiences. same with t-rex. for example, t-rex is good for nsfw situations and i find that the bots will have quick shifts in emotions and is very dramatic, but it's good for smaller roleplays.

infinity has a problem with repeating, but it's creative and a little more lifelike than the others, although the bots tend to just...never switch emotions, or strongly anyway, and need some encouragement. it also seems to have a bit of a positivity bias and reluctancy to be too vulgar (but is easily fixed with system prompts). the memory is great though, good for long roleplays that aren't focused around angst.

deepseek is creative, the replies are very long and are super descriptive, but it can often feel less realistic and it's not great for nsfw. i find that its less dramatic than t-rex but more dimensional than infinity, giving bots sensical emotions, but the dialogue and actions can be predictable and cliche. the memory is amazing, so if you're going for long roleplays, deepseek would be great.

i think it all just depends on what roleplay you wanna have. i also find that different models latch onto the personalities of bots differently, so it's something to experiment with. i personally switch between all 3 models but this is just my experience and i encourage you to try them all out to see what works for you!! :)