Any reason to upgrade to the SDS200 (other than the fact that it's blingier)?
I'm a big fan of the BCD996P2 scanner, however:
The SDS series have a much larger color display that is more than just bling. You can modify/customize the display fonts, layout, additional fields for much more information. The background and text colors not only look great but can be useful in how all the additional information is presented.
It has a RJ45 network port which is great for remote control, programming, and streaming.
The SDS scanners have a Micro SD memory card that stores the entire Radio Reference database for the U.S. and Canada so you don't need to access RR by a computer to program it. You can store numerous profiles that allow you to instantly change your scanner's programming to accomdate various situations such as using it at home, at work, your cottage, on the road etc. Adding a GPS can automatically reprogram your scanner as you drive across town or the entire country! The memory card makes it easy to backup and share programming profiles and favorites with other SDS scanners and share with friends/associates/departments ETC.
The SDS series have the ability to record, store and playback audio without the need of a computer and additional software.
Although some people have no problems with simulcast P25 digital distortion on the BCD996P2 depending on many things being just right. But if you do experience simulcast problems in your area or while on the road, a SDS scanner will normally cope with it well and produce clear un-fragmented audio that rivals commercial Motorola gear.