WD and seagate is good but seagate got 5 years warranty while WD got 3 only. Since HDD spoil easy more warranty is better but I still prefer WD over seagate because my 3 previous seagate HDD never live more than 2 years.

However, seagate and WD has improve since then so I'm sure seagate is a good buy. If you got the money just go for min 500GB since games size is getting bigger and you might need it for other purpose.