I recently ordered a new 250 gallon acrylic from James at Envision Acrylics. Wonderful customer service. The tank won't be delivered until July 6th, but the pics of it look great. Also, nothing but good reviews on his work from others here on RC. The prices from the LFS were higher than ordering the tank directly and having it shipped. I actually chose acrylic because of the weight vs. glass, as well as the increased strength. I may end up moving in a year or two, and the thought of moving a 400+ lb tank was not appealling. I've also got 2 young kids, and am nervous about something cracking a glass tank. Maybe not much of a concern, but enough to sway me. On that size of tank, there was not alot of difference in cost for glass vs. acrylic, some, but not a huge difference. I actually wanted glass because it would be easier to clean, since you can use metal scrapers and such. The scratch issue is not that big of a deal to me, and they are not that difficult to remove.
Hope this rambling helps.