Thanks for the advice
After looking on the sites suggested by anthonyb and u8myufo if have seen some vapeonly bcc and replacement coils which (I think) means I wont have to buy an ohm tester or learn how to re-coil. Although im sure it will happen, im not sure im there yet!
Am I right in thinking these could be washed out to try a different juice?
BTW cloud 9 seem to have these at a good price at the moment too.
Thanks again.