I've found that buying with Bittylicious and Localbitcoins to be a very swift, painless experience. Bittylicious limits the amount that you can buy depending on if you have an account, have uploaded ID etc. But it is very quick and very safe.

Bittylicious also stocks a range other other currencies and provides a number of options for payments - prices vary depending who is stocking for which payment type.

BitBargain is a bit of a pain in the arse, if I'm honest.