The original Ethernet speed was 10Mbs but fast Ethernet (100Mbs) came out in 1995, and almost all routers support that speed, or even faster with Gigabit Ethernet. Either of the routers you are looking at should be fine, but I would also look at Linksys. I would go for brand name over price, but that's just me.
Your limiting speed will be the speed of your ISP. You have got a good speed from your ISP, but most new routers will be much faster than your ISP.