I have a spec racing one also, its very sturdy (I know this, due to me been clumsy as hell, and dropping it numerous times) Also, the padding inside is well suited to adapting to different sized cell and motors, and provides a nice tight seal around items, to keep them secure.
If you have wires on your cells (and not corally connectors) then they fit in too
I think mine was £40, but don't quote me, I have now had it about 2 years, maybe more
