Damn.. I was hoping not to hear that. 14lbs doesn't seem to be that much. If you had a chance again would you get the 15lb Blichmann?
No, not for me. I only do 5 gallon batches and rarely go above 6% ABV so the 10 works great. Plus I don't have much head space so with a blanket wrapped around it I hardly loose any temperature in 60 minutes.
If I want to use more grain, I can just use less that full boil water and top after the mash.