Textspeak is for texting when you only have a wee little phone to use and the keys are small - When you have a nice big qwerty keyboard to use, please use it - Seems to be a lot of talk on here about being English (Sorry to the Irish, Scotch and Principalities ), so would think that using the language in its beautiful long form would be in order.
Otherwise: 2b or not 2b, wot is you chatting about innit!! knowwhatimean, respek!