Do you work in Teleskop-Express and what is your opinion about the image ?
The work I do for Teleskop-Express is buying stuff from them every few months. The image? I'll answer for one item at a time. The 17mm 70° Expanse eyepiece (clone of Astro-Tech's AF) is a bit sharper than the Hyperions at the center. Jupiter in the Expanse is "dryer", a bit more clean-cut.
I never spotted a difference in daytime testing but it showed by night with the large dob. Edge sharpness is excellent but only after you learn to put your eye at the precise center and at the right distance, this is critical with this glass or stars stretch wildly.
My TS 10x50 Marine is a clone of Orion's Resolux and an Oberwerk model with the exact same look, reviews of these are reviews of the Marine.
The 8x40 Wildlife is nearly as sharp as the Marine over the whole field, and very transparent with no flares, ghosting, vigneting, or any other issue.
Then my 80mm triplet, which I compared with a friend's Tele Vue 101. An artificial star, real stars and colorful dying autumn foliage were the targets. There's a caveat however, a triplet is optimized to provide maximal sharpness and contrast at the center (where you put planets), but needs a corrector for full-field photography because edge sharpness is less rigorous.
On the other hand, a 101 is a compromise between keeping good star roundness at the center and acceptable star roundness all over the field, with no need for an extra flattener (the flattener is already inside). Keeping this in mind, the apparently unfair comparison, 80mm vs 101mm and 646€ vs 4,100€, 3 lenses vs 4, will make more sense. Made in Asia pricing vs Made in USA pricing, obviously.
The 80 cuts through turbulence where the 101 submits to it often; the 80 has almost all its resolution all the time but the 101 needs calmer air to show its edge. Contrast is a tiny bit better in the triplet, but the difference won't make someone regret buying the Tele Vue, because as a stand-alone astrograph, it does its job very well, except for vigneting that some can ignore while some others can't, matter of personal choice.
Orion's carbon-tube 80 triplet and Levenhuk's triplet 80 are clones of mine. So is Astro-Professional's 80mm carbon triplet; both have a Strehl ratio (optical quality ratio) between 0.95 and 0.99 depending on the colors tested. It doesn't get any better, not even with high-end russian LZOS lenses or Takahashi lenses.
TS 8x40 Wildlife, 10x50 Marine/Fujinon 16x70/TS 80mm triplet, 6x30 finder, EQ-3 mount, TS 2" 99% diagonal/Celestron C5+ and 6x30 finder, DIY tripod/5" Bahtinov/12" GSO dob, 8x50 finder/Meade 2" 24mm 82°/Hyperion 24,13,10mm 68°/TS Expanse 17mm 70°/SW 7mm Panorama 82°/Ultima 2x barlow/Astronomik UHC-E filter/Baader O-III/Astro Solar 5" & 80mm filters/Sky Atlas 2000/Rükl's Moon Atlas/Canon 400D/5mW green laser