I've used:
coinbase: seemed to work just fine for me; just somewhat of a lag from buying to clearing which may be common?
localbitcoins: only done face to face cash transaction, was my first transaction and it went through though I would like to know how online transfers have been
all in all I have been satisfied with both but I like to have options open just in case so what do u guys use and why?
Well when it comes to me buying my bitcoins if I need some asap i'll bump this thread https://bitcointalksearch.org/topic/1-exchange-buy-sell-bitcoin-ppwumgskrillw2w-more-best-prices-available-273034 usually someone sells but I just recently started using coinbase to I haven't purchased any just sold a few here an there they seem alright for that but I've heard some bad stories when it comes to buying from them about "high risk transactions" an then they're canceling the orders.