I now buy from ebay seller who has about 29000 feedback and they also have their own website, cheap in bulk too so I did take a chance but a year later not had any problems with any of them and they have long expiry dates.
A GUM clinic once gave me ones called condomania and one broke, it only had 6 months expiry on it but they should've been good still. Don't know if they still exist.
Lastly, when I started I bought some of those exs smiley faces ones from ebay and 2 broke, luckily before the end as I check every few mins. My only other breakage was a durex 1 a man brought himself, also when I was new. Lesson learnt.
So mixed experiences from all sides really.