1gbs is pretty slow nowadays and if you do any work that uses huge files that need to be copied to a NAS or a file server then moving up to 2gbs via bonding cut

1gbs is pretty slow nowadays and if you do any work that uses huge files that need to be copied to a NAS or a file server then moving up to 2gbs via bonding cuts transfer times in half. 10gbps is expensive, uses a lot of power, requires cat6, and rare outside of servers and SANs currently. Interestingly enough, there's a recent 5gbps spec that works with Cat5e that might be picked up by OEMs to replace 1gbps. Still no chips or cards out yet, so it will probably be a while. In the meantime, bonding two 1gbps interfaces gives you about a 200 megabyte/sec write & read speed off a SSD based server/NAS.