i got this in thened
http://www.amazon.co.uk/dp/B00EO4MDVC/ref=pd_lpo_sbs_dp_ss_3?pf_rd_p=569136327&pf_rd_s=lpo-top-stripe&pf_rd_t=201&pf_rd_i=B008QTYMWO&pf_rd_m=A3P5ROKL5A1OLE&pf_rd_r=1NZ89MKRXNYCDH4J3567

so far it has woken me up naturally about 15 minutes before i want to get up, so it might need a little bit of tweaking (you can adjust the brightness etc) , but i am very pleased with it so far

recommended!