Hell of a tiz regarding what lipo!

[gnr racer]

im in a hell of a tizz regarding a lipo for my losi 8ight conversion, monster mamba v3 speedo & 1800kv arrived yesterday, after paying £33.75 (£20 customs) at parcel force..parcel force £13.75 release fee as they like to call it! they had my pants right down.
anyway, ive decided to go 5 cell lipo after Marvin & co's words of wisdom
and yes i would like to go the quality of Hyperion but i just cant justify paying over £130 for a lipo. i am going to stay well clear of ebay jap lipo's as i recently witnessed one going up in smoke at a local club day.
but all the rc shops i usually deal with for nitro spares are more 2 cell lipo orientated.
can someone point me in the direction of 'decent' 5 cell lipo's