Crypt question...

I was wondering how many out there have an aquascape with a primary focus of crypts. Last night I did my weekly water change and prune of my 29 gal and as I sat there uprooting, topping, and replanting a large number of stems, I thought of doing something with primarily crypts, thinking the maintenance would be lower. My concern is that having experienced a major meltdown once with wendtii, I would hate to think of the whole tank someday going into meltdown and ending up with a tank of goo. Are there some crypts that are more likely to melt than others? Or are most of them of equal susceptibility?