Some of the tires mentioned before look like they would work. Also, why do you want a fork with lockout?

What I would like to know is how long is your commute and over what surfaces (i.e. 5 miles all city streets)? What is the split between commuting and offroading (i.e. 70% commuting 30% offroading)?

I thought about replacing the fork (non lockout) on my hardtail, but I couldn't justify the cost vs. benefit for my riding purposes.