3 or 4 10's

Okay peeps...

I am working on a budget build. Working with the e-bay mystery VVME RD10's. Now they only come in dual 4ohm. I am running a Soundstream Rubicon 2500.1d rated at:

2500 watts @1ohm

1700 watts at 2ohm

Now I am contemplating if its worth it to run 4 of the tens as I would see 2ohm. So just for numbers sake, lets say the 4-10's see 400 watts a piece. Now, if I run three my amp will see 2.33ohm. Again, lets say for numbers sake each of the three subs see 500 watts.

Which would you run? (Please, no comments saying neither cause the subs are junk) Its a damned budget build.

4-10's at 400 watts each

or

3-10's at 500 watts each

and why????????