Are you looking for something with a recurve like the 0350, or something with size closer to the XL or standard Manix? Or something with the liner lock like the ZT, or one of the various lock styles used on the Manix?
Benchmade is really the 'AXIS knife company now'...a huge portion of their knives are AXIS, and that only makes sense as it is an exceptional system that has made Benchmade hugely popular. So your biggest BM selection is going to be AXIS, but they will be different from the others. Benchmade and Spyderco have an interesting history; while they make knives in the same price, size, and even steel ranges, the actual products they produce are radically different from each other, so comparing is really hard.
I think the Rift, Contego, and Ritter Griptilian all have some similarities to the other two...if this is your first Benchmade, those three are outstanding knives that really perform. The 710, 520, 806, 940/943, and a few others are also Benchmade 'classics' in medium-to-large size. But my favorite model from them for a large, hard-work knife is the Contego...it fits the hand so well and is available in both M4 and M390...serious awesomeness steel.
If you like the way the blade on the Manix performs, you may find the Ritter Griptilian to be the best pick for you personally.