The Starfield targets what Moondrop call the virtual diffuse sound field (VDSF), it's their take on the diffuse-field neutral curve, with a slant towards Harman neutral (so they tame the highs and add more warmth and bass).Got the Starfield. Fit is so so, and for me it becomes tiring after 30 minutes (compared to shure IEMs). Sound is good for classical music, some vocal, but I too find it too bright and thin (sometimes splashy?) to be used as all rounder. I would prefer a few db more bass and a bit more polite top end.
I like AKG K371 - which is supposed to follow harman target. To my ears - Starfield (which is also suppose to follow harman curve) sounds much thinner and brighter.
Would appreciate any suggestion for XL tips - as an upgrade over stock. I don’t like foam and prefer silicone. Would consider foam if they tip signature to warm side significally.
Here's a good review that covers this for you: https://theheadphonelist.com/moondrop-starfield-review-harbinger/