The XFX is built on a quite excellent Seasonic platform, I would not expect any reliability issues. You could buy a more efficient PSU, but you'd probably hit the break-even point right about the time you were ready to replace it.
One thing I just noticed is that the PSU you recommended was 170mm, which is a tad longer than the size that the TJ08B-E recommends. While it will fit PSUs up to 185mm in length, the SilverStone site points out than longer than 160mm (6.3") will result in encroachment into the area for ODDs and anecdotal evidence suggests that it makes cable routing a nightmare.
With that in mind and keeping within the 650W range, there does seem to be some options between $90 and $130. Anything that I should look out for, besides the length issue? Is there any real difference in the ATX versions (2.2 vs. 2.3) that are worth paying an extra $5-15 for, other than it looks like the 2.3 spec was ratified nearly 7 years ago...