The Good
TRX has revolutionized the way that I do household level portfolio monitoring and rebalancing. What used to take me 60-90 minutes per household (at least) now takes me five minutes. And, because it is so easy, I am able to monitor the portfolios far more often (and abe to sleep far better). I used to worry about error prone data entry, whether I was considering all of the taxable consequences, whether I was making errors on entering trades and so on. TRX is great for rebalancing, tax loss harvesting, avoiding late year capital gain distributions, replacing funds in your model. And their support is friendly and responsive. You just can't place too high a premium on that.
The Bad
I am a DFA advisor with a strategic asset allocation model. I can't really speak to whether or not TRX would be a good fit for someone with poorly defined or frequently changing models. You have to use Portfolio Center. You have to categorie the mutual funds and ETFs that you use. And you have to have defined models. This was not an issue for me.
The Bottom Line
If you are like me in that you are a DFA centric advisor (or passive) with fairly static models, household level portfolio monitoring and rebalancing will move from being something of an anxiety provoking chore to being a very clean, streamlined and confidence inspiring process.