Switched from Turbo Tax Deluxe this filing season. Price was the main motivation to change. The H&R Block software worked well enough to get my Federal and State taxes done, but the interface was less intuitive and more "clunky" than Turbo Tax.
Deluxe software is getting better each year. In the past, recalling the correct stored itemized lists was a problem when reviewing completed sections of the tax process. Often the wrong list popped up.
The price for the federal income taxes is reasonably priced. The state taxes, which are not included, understandably, is over priced, in my case, more expensive than the federal tax prep.