[David Hodgson]

Step away from the model shops Mr Buckley, you need to stop collecting now. It becomes a sickening disease. You will find yourself wandering the aisles of department store toy sections, model shops, tobaconist kiosks, flea markets, or anywhere you are likely to find these little 4 wheel wonders.

I have amassed in excess of 50 now, from ones as small as 15mm to a radio controlled one over 400mm. I used to put thm in the display cabinet but that is now full so they're still in their box's in my top cupboard.
My saving grace was setting some rules; collect only cobras, don't spend over $100 on a single item (I've missed out on some nice Kyosho and such with ths rule), buy only what I come across -no mail order (though this rule was broken in pursuit of some cobra slot cars). Theres a mix of quality in there, some good one from brand names, some average ones from brand names (maisto) and a mix of toy based ones, even a clay look one.

The 289 is was the most difficult to get, I have a couple of these now, one from ToysRus recently.