The TX650 and TP-650 are both better than the GS700 (V2).
This is because the TX650 is functionally the same as the GS700 (same number of connectors), but uses higher quality internal components and will have higher performance. You won't notice any benefits from the extra power the GS700 has compared to the TX650.
The TP-650 is functionally superior to both the TX650 and the GS700. It has higher quality internal components and better performance compared to the GS700. Mostly it is on a par with the TX650, however it probably wins due to being semi-modular and being only $3 more expensive.
Thanks, I never really thought about it like that, Im really considering the TP-650 now as semi modular would work well for me since im in a tight-ish case