I use 4Pockets RTA Pro. Pricy, but well worth it. Company has great support too. I had it on my 6700 and when I switched to the Touch it wouldn't work. Emailed them and got a version tweaked to run on the Touch. I have compared it to a dedicated rackmount RTA, and it works just about as good.
http://www.4pockets.com/product_info.php?p=55
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Former Windows Mobile enthusiast and developer, now a modder working on Android. I still have my PPC 6700 and HTC Touch, but I'm rocking a OnePlus 7 Pro