Can anybody please give me a review for the following sight ;

Nikko Sterling Diamond XT Speed Sight Red Dot. (NOT the XT2 or XT3)

Have spent hours searching the web and cannot find a proper spec' or a review

Is it worth £140.00? (rrp is £176.00)

Can only source an XT at "opticswarehouse" who cannot get the XT2 or XT3 because Highland Outdoors the importers do not have them even though they advertise them.......Heeeeelp

Alternatively what other quality scope will do the job for that kind of budget?? Will be using it for pistol FT and some paper target.