After running the calculations am I correct that holding all things constant (same elec. rate, shipping from Bitmain, difficulty,) the ROI seems to be about the same this S7-LN vs. S7  (within about 10 days or so form the calculator).  I am not even questioning if ROI is even achievable with everything else going on.. halving..next gen equipment etc. Just doing a direct a comparison between these two models.

my calculation allotted for buying a S7 PSU for about $150, and being able to use a $100 coupon on the newest Batch s7 (which I assume cant be used for the S7-LN?).

This would make total shipped cost of Each:

• S7-LN = $276
• S7 Batch 17 + PSU = $550

My point is, unless you just need a smaller / quieter machine... ROI wise & comparison wise the S7-LN does not seem drastically different that the S7.  Does this seem correct?