Lysergic. This model is the lightest of heart among the trinity. It’s cartoonyer style shrugs off a lot of the darker aspects of its siblings and instead brings a more vibrant and dynamic style to the table.

Usage Tips:

Samplers:

DPM++ 3M SDE Karras and DPM++ 2M Karras: General purpose workhorseseses, I like to use it for pretty much everything.

Cfg:

4: Great for pretty much everything but especially photographic styles. (My favorite)
5 -> 7: Great for pretty much everything, as it goes higher it's use for photography diminishes but is as, if not more, useful for artistic styles.
8: Great for some art styles but will burn photographic generations to a cinder.
9 and above: Yo crazy.

Steps: 30 to the limits of your patients. I never really use more than 50 and find that above that it's a case of diminishing returns.

HiResFix:

(I consider HiResFix a must for all of my SD 1.5 models. They are not intended to be used without it).

4xUltraSharp
Denoising Strength: 3 to 5
Steps: I tend to use around 50% of original step count.
Upscale: 2

ClipSkip 1 and 2 give great results. Haven't really tested more than that, I find 1 to be more detailed and 2 more cartoony. Which ever floats yer boat.