I tried a couple of alternatives - like this Rii tiny keyboard but it sucked.

The hand held remote that came with my mini PC was IR and required line of sight.

The best remote to get around that is one of the remote apps you can download on your smart phone. Those work off your wifi and don't require line of sight.

Overall, the 400 is still my preferred choice - it's very responsive and despite its larger size compared to a hand held, having a good keyboard for searches is great. The mousepad is very responsive.