The G2M base figure is free with some essential products for those who are curious. It'll give you an idea of how this new figure bends and moves. 

As always the choice is yours this is just an option for those who are interested in a latest generation Male Figure.

If you'd prefer sticking with G5, G4 or even G3 for that matter its purely up to you.

But there is no denying M6 is here.

The evolutionary tree seems to be dividing at ever shortening intervals, with the recent additions of the Dawn figure and G2F and G2M, making it harder and more expen$ive to stay up to date. If your someone that needs to have everything.

Compatibility between figure bases is also an issue, with the Genesis figure making a leap forward uniting both sides of the warddrobe with Unisex clothing. Which we see once again divided into the genders with G2F and G2M giving more gender focused clothing shapes. 

What we have at the end of the day is choice and to me thats a good thing. If you love the look of M6 then jump in. If you want to see how things play out for a while, thats fine to. If M4 still fits your requirement list thats okay, no reason to change.

For me the improvements in the base mesh, rigging and surface/skin performance, plus the expectation of HD morphs and characters(similar to G2F).  Made M6 well worth it and long awaited upgrade to the male figure range.