Well Kip..You've entered a a controversial topic..but here goes...
There are basically two types of "torts" in our hobby today IMO...the Oregon and the Cali.
The Cali tort is alleged to originate from a guy named Scweb in the bay area I believe. The Cali tort grows very quickly and is blue...but, not solid blue...and has lighter, almost greener shades to it and it will polyp out even in the day. It tends to grow with many branches in many directions. Since it is a fast grower, alot of people got a hold of it and distributed it...like Bennet, Berman, and ORA. The ORA tort is a Cali tort... ORA is just a distributor...as is evident in their current drive to acquire a few Oregon torts from a few folks up here in Portland.
The Oregon tort arrived here in Oregon around 1998 as a hitchhiker on a shipment from Bali to Waves Marine. They propagated and distributed it locally. Most sps reefers up here have it. It is a very slow grower and is solid blue and will stay blue unless exposed to low light where it will turn purple. It only polyps out a little bit during the day. If allowed to grow (and most folks don't let it grow at upwards of $100 per frag), it will grow more like a christmas tree...upwards, compact, and the branches will fuse together as it gets fatter. It can be bonsai trimmed to make it branch more...but, if left alone, it will look like mine.
The Cali and Oregon torts look similar in the frag stage and only differentiate themselves by the Oregon being more blue... and by their eventual different growth patterns. BTW, this different growth pattern probably means that one of these two torts is not a tort after all....but, that's another controversary.
I think your tort is a Cali.