Unbeatable in quality & quality for this price. The competition from China is round 20 euros more expensive without explicit dt. Demand -stationary SYS. But in quality less convincing (Mechanical / haptic), but not bad either. The BRESSER is simply better. Larger luminous intensity to 5m breiters visual field u. Crisp screen. Both have almost identical technical. Features. Differences are abs. minimal, but noticeable. After a short acclimatization are both easy to use. Very handy u. Compact. Of course with all telescopes a steady hand is needed so "image shake," can not be a negative selling point !! And as for the Aperture: How much light should be able to come up already in a 25mm-tube? In case this pipe already normal daylight perfectly adequate to good (well u. just at full zoom). Logically zoom, while it is becoming increasingly "darker" in glass. Anyone who criticizes (see recession: HILKINSON), which must be fair, just on 50 OD 60mm and more recourse in diameter... But in really bright environment (perhaps even with sun) is this pipe abs. No reason to complain. (Even at full zoom) I have compared this "glass" with an almost-same type Chinese for 80 Euro. More expensive but not better !! There are also "Far East-tubes" (eg Panda / Vic Tsing) from about 13 euros, same e-Bay for 33 €. The 70-times magnification should be kept no more. That's only because wobbles. And then the light intensity even with Zoom? So, forget it. Bresser (identical to "HILKINSON") is for me the test winner u. Therefore, strong buy recommendation !!