another one from me

i know I've done a what singlehander thingy once but hear me out.

here's the thing.

I'm now in the 29er (as some may have noticed) and so i no longer sail the RS feva thingy with my loyal brother.

Now yes the feva is singlehandable but not really the best thing for that so.

What we need is a single hander thing for my brother to sail but chances are i'll nick it when he's not sailing himself and the 29er is not available.

boats ive been thinking of are:
laser radial (yea they are okay but its a laser think he'd eventually get bored)
Topper (excellent fleet and he loves the social scene but its a topper)
RS 300 (look so cool but too challenging maybe)
RS600 (i so want one of those but i doubt my brother will like it)

so stats
the boat is for 55kg person who wants a bit of a chalenge but likes sailing not swimming (dork!)

wants to have a nice cruse but wants to have a bomb around now and then.

wants something to grow into not out of

wants to be able to sail it on the first day but wants it to keep him ocupied.

erm have fun reading it i know im baffled

well he is 14 and is about 5ft 5 or 6

he's a good little sailor if not a bit lazy