I bought some see d stamps a month ago and they are brilliant.
They don't take up much space as they are stored in a cd case and you just get out the one you want and reuse a stamping block.
The best bit is you can see where you are stamping, so I have been brave enough to stamp directly onto the card- very useful for phrases.
I also use a cotton bud to go around the outside ofthe stamp and take off any extra ink before I go for it.