Alrighty There People!

Not sure if this is in the correct forum, but here goes...

I'm nearly finished my novel. I'm going to self publish it via Lulu.com - I've had success there before.

But I've been told to steer clear of Arial when I publish it. Now, the book is currently in Arial - but what font should I use?

Now, I know that this is down to personal preference much of the time, so if you are kind enough to reply, please state why you would recommend a particular font.

Many thanks in advance.