Well, Robt. I'm biased - I am absolutely, 100% a DCC fan. So I'll torque that arm a little more.
I would definitely go DCC. Short term you're probably looking at similar cost. Long term, it will enable a LOT of additional functions, such as computer control and "routing" (AKA Macros, wherein you set a "route" that switches a whole group of turnouts in one shot) E.g. you could have a "route" set up for "yard lead into yard track 5" and hit one button to fire off all the necessary switches.
You may do none of this today, but think of the DCC option as the foundation that you need to do it in the future.
I should add that the real "added cost" option is what I have - do it both ways. Again, I'll recommend that when one can have the best of both worlds, one ought to... But that's really up to the resources you want to put into this right now.
My breakdown (yours may differ, especially on DC depending on how you do panels, not including cost of actual turnouts/switches)
DCC: $40 per six switches. That's pretty much it. Walthers was selling the Atlas version of the LS150 (same thing, different label) for $35 recently, but I'm going to be conservative and give the price I know for sure tonystrains sells the LS150 for all the time.
DC: $18 per six switches for SPDT momentary toggles (about the same for pushbuttons which are cheaper, but you need twice as many), Plus: hardboard & acrylic to make panel, lumber to mount panel. Terminal Strips and/or Power Distribution Strips to wire it all. Call it $30 total for six switches and $10 for each additional 6 (very rough ballparking here).
That's what I mean when I say it's really not a big cost differential...