For any 5th wheel is great, but we are purchasing the Arctic Fox 27 5L if anyone can comment on that specific model's options.
We looked at them but we ran out of truck (3/4 ton) before the 27 5L ran out of weight IMO. One of the best on the road I think. Something like $14,000 worth of options we were told. So "build sheets" would come in handy for various reasons.
One reason is if you ever suffer a loss. Insurance company will try to average all 5th wheels of that year and length into your pay off amount. With a "build sheet" you have proof of how unit was equipped. I called Northwood about mid Nov after buying a 2013 TT and was told the latest change is "build sheets" will only be available to first buyer and for only a certain amount of time. So make sure you get one. I've read where others have just called and had "build sheet" sent to them. So don't know for sure if that's the newest change or the person I spoke with. But I wouldn't sign final papers without one.
Hope this helps.