Philip,
You should go to your local full service cutlery store and take time to hold, and inspect each one.
It's good to get people's opinion. However, I discovered that everyone has a different preference for knives that is as varied as asking someone what their favorite food is.
People buy for different reasons too. Some people are very brand loyal, others like certain designs, etc.
Most of the knives mentioned in these forums are good knives since most avid knife collectors are not going to be buying some hardware store special which comes in a bubble package.
The reason why you might want to consider a BM710 is because you have enough "similar" frame/liner locks in your current collection. The BM AXIS lock and SOG's arc lock are a new approach to locking folders.
In addition, the 710 is the right size, the construction materials you want, and within your budget. Although I have complained about the factory sharpening job, the rest of the knife is beyond reproach. The action of the knife is very, very smooth making it very safe to open so you won't accidentally "bite" your fingers as you would on a stiff opening blade.
Although it is mass-produced, the BM 710 feels like a very high-quality knife.