I bought both and sold the chrome top and kept 10246.
10246 is plenty strong, newer design, smaller, lighter, and just overall a better box in my opinion.
Plus you can use both stick packs and gell cells in the 10246.
I don't think you can use sticks on the 10250
Go with 10246, you wont be dissapointed.
Even the Ofna tech said it was there best box
Oh and I use it to turn over .26 engines like the wasp,, no problem at at