For those of you interested in this sort of thing, there's a free (and very legal) SBL Greek New Testament available here:
http://katadrew.com/2011/sbl-greek-n...us-for-kindle/
It has some nice features, but one of the commenters is preparing another version which will also include 5-way, linked TOC, etc.
This is not the Byzantine Majority Text. Which is nice. The apparatus even gives you the Nestle-Aland variant when the SBLGNT differs from NA27.
An older version (w/out apparatus) is available here along with notes on the very liberal SBL license:
http://katadrew.com/2010/sblgnt-for-kindle/