Which is better for a fast printer like a Bambu Lab?

The Sunlu. It is rated to 600 mm/s and lists AMS compatibility. The eSUN has no high-speed rating, so you would print it slower.

Which has the stronger track record?

The eSUN, at 4.8 out of 5 from 61 ratings versus 4.4 from 8 for the Sunlu. The Sunlu sample is small and includes one 1-star review.

Is the Sunlu worth the extra 67 cents?

Yes if you print fast or want a matte finish and tighter ±0.02 mm tolerance. Otherwise the cheaper eSUN is the safer pick.

Which is better for outdoor or load-bearing parts?

Both are PETG with good chemical and impact resistance. The Sunlu publishes 46±5 MPa tensile and 70±2 °C heat deflection; the eSUN publishes no figures, so the Sunlu is easier to spec.

Do both fit a 1.75 mm printer?

Yes. Both are 1.75 mm, 1 kg spools. The eSUN holds ±0.05 mm and the Sunlu ±0.02 mm.

Which finish hides layer lines better?

The Sunlu matte surface. The eSUN is high gloss, which makes layer lines and fingerprints more visible.

eSUN PETG Filament 1.75mm 1kg Spool - Grey vs Sunlu PETG High Speed Matte Filament GREY 1.75mm 1kg

Buy the eSUN PETG if you want a proven, glossy grey filament at the lowest price and print at normal speeds. Buy the Sunlu High Speed Matte PETG if your printer runs fast and you want a matte finish. The eSUN is $12.62 at Amazon as of November 4, 2026; the Sunlu is $13.29 at Amazon as of November 4, 2026, a gap of 67 cents.

Today the eSUN PETG Filament 1.75mm 1kg Spool - Grey costs $0.67 less at its best price.

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