Except for a menu system on a DVR, I do not know a better menu system than Voom's. The only thing missing from that is an all subscribed channel lsiting. It's an all available or a favorite listing. There should be, IMHO, an all subscribed guide.
The Moto box from the local cable co, which is Insight, is much worse. It doesn't compare. The guide on the 3 (different) Dishnetwork boxes I have are much slower than the Voom box. For Directv, I only remember this from a few years ago, it really depends on the brand you bought. But it was comparable to Voom on some, not better.
But if you're used to a DVR menu system, you're right. It doesn't cut it. But that's apples and oranges.