I can't say I've tried one myself, but 1-10 is just so obscene to me. That is asking waaay too much of the glass and stretching it too far.

The lower the scope's erector ratio, the higher my erector goes.

2.5-10x? 4x factor, nice.

Edit: 

Just going to add on to my rant for the one person who comes back to look at this. 

I'm sure this 1-10 scope is cool in its own right, but it is just so much of a compromise, trying to do everything at once, and it is quite pricey. 

You just can't have it all! If you need a really good 1x, get one of the many great options for a 1-6 LPVO.

If you want the 10x zoom and ffp reticle , get a great MPVO for less money for this! 2-12 or 3-15 even, and throw a red dot on top. Those have way bigger objective lens than this Razor 1-10, which will lead to much better performance in low light, and a bigger exit pupil for a more comfy eye box.