Which flashgun for firefly slave unit

[Beneath the surf]

Hi i am new to this forum and also reasonably new to photogrpahy. I am very interested in cave photography and have purchased 3x firefly slave units i am looking at purchasing 3 flash guns to team up with the firefly's and i am lost as to which one i should choose. The firefly is based on a hotshoe adaptor, due to the fact i will be getting three i dont want to be spending an excessive amount. Seen some on 7dayshop.co.uk - Nissin Di28 Compact Flash Gun priced at £45.00 each would these be suitable? + do you know of any stands to mount the flashes?

Sorry for the long post any advice much appreciated

Thanks

 

[cowasaki]

FlashInThePan is about to start selling some manual flashes which might well be ideal......... Just goes to get link..........HERE

 

[david1701]

alastair.b on here uses a vivi 283 and something smaller on a firefly, drop him a line as he knows a lot about packing and stuff

just got me into caving :bang: when I'm a bit more experienced photography will be happening

 

[alastairb]

yea i do cave stuff, where abouts are you based/do you go caving? i would recomend getting cheap units due to the fact that they will be getting muddy/wet so no point in ruining expensive stuff. i have a vivitar 283 and 2800-d, the 283 being fairly powerful and the 2800 being small for stuff in more enclosed spaces where the vivitar is too bright.

edit:
here are my best efforts so far
http://www.talkphotography.co.uk/forums/showthread.php?t=141041
http://www.talkphotography.co.uk/forums/showthread.php?t=144582
http://www.talkphotography.co.uk/forums/showthread.php?t=155955