I find tomo slurry to be better than dmt slurry if you have a well matched tomo. If your tomo is too hard or soft then a dmt is the way to go. Dmt slurry can definitely put some micro chips on a blade if they break off too large as you said. Koma is expensive, but if you can get some its worth it. I almost always do a botan tenjou mejiro koma and tomo.
Ive done 1k 5k then 2 tomos for some great results also.