Here's my sum up after spending a day for tips rolling.
Tested tips: spinfit cp100, cp100+, cp145, cp155, cp360, cp500, cp1025. Radius Deeps Mount, EPro EP01, SednaEarfit regular, SednaEarFit XELASTEC, EBGVP W01, A07, BGVP Electric Blue “ArtMagic VG4” and Stock tips.
Selected 6 tips to recommend for mk2
From left to right
1. Radius Deeps Mount (most expensive tip)
Have a very unique sound signature, if you going for natural sound signature. This tip is not recommended.
2. Sedna Earfit regular
All rounded tips, good mid range with tight bass.
3. BGVP Electric Blue “ArtMagic VG4”
Bass and low-mids are detailed, punchy and dynamic. Midrange is clear with excellent separation. Vocal position is ‘just nice” Soundstage is realistically wide without sounding too spread-out.
4. Spinfit 155
With it long extended tips, it's provide better insert and bass.
5. Spinfit 360
For those who wants less brightness for mk2.
6. Spinfit 1025
For bass head & soundstage lovers (most comfortable eartips, shortest stem).
Tested with Stock PW Audio cable and Shanling M3X.