Overall pretty good in how it works and the guidance provided. They need top fix some limitations that can prevent eFiling for states for things that are uncommon but probably not rare, such as (in CA) having a W-2 where the employer puts two items in box 14 (and this limitation seems unnecessary since when printing it for filing it just combines the values).
I've used HR Block TaxCut for many years. I appreciate the consistency of the user interface over time. And pretty straightforward to use. I'm reporting rental properties, K-1's from partnerships, investment gains and losses. The interview interface is good for most everything. Interface gets a little tricky when you have to leave the interview and enter data directly to the forms behind the interviews. But still very doable. Once I have reported out all of my relevant data from Quicken (by far the most time-consuming part) I can generate the fed and state returns in a few hours.