I've been using the Kinesis Maxim for years, and I highly recommend it. It's split, adjustable (both width and height), has great keying, and is very sturdy: h

I've been using the Kinesis Maxim for years, and I highly recommend it. It's split, adjustable (both width and height), has great keying, and is very sturdy: http://www.kinesis-ergo.com/max-spec.htm http://www.kinesis-ergo.com/max-spec.htm