If I have to stick to one tense only then i would prefer past. But i actually find it increases the dynamic of a story when past and present are freely mixed. I can't come up with an example that works, off the top of my head, it was something I discovered by accident when a friend mixed past and present in a post by accident and I read it and thought, "actually, that is kinda sexy writing..."<br/><br/>Basically it has to do with action. In a fast paced scene switching to present tense increases the urgency, especially in first person.<br/><br/>However, past tense should be the preferred tense please.<br/><br/>There was something else.... Um... It'll come back to me eventually