I still remember how excited I was when Lionel first offered the Acela, and for me it was the set to own regardless of price. Granted it is an expensive set that requires big curves and a relatively large layout to operate properly, but was the 709W Rail Chief set in its day (albeit with much less technology on board).
Another option to consider is the fact the Acela was only made by Lionel in O scale, unlike other steam and diesel models. I doubt Atlas or MTH would come out with models of their own. The only other models are in HO or N, made by Bachmann.
Although I cannot run my set, I do display it with pride and certainly would buy it again despite the known issues. My recommendation is if you love and want the set and have the means to purchase it, go for it.
-John
