I believe I''ve narrowed my search down to the three stones outlined below. I would love any thoughts on which you may prefer and why, and anything that may pop out as being notable. I only have images for the first two stones, unfortunately - but the third seems like a great price for the virtual specs, so I haven''t ruled it out; but I would need to purchase it first to evaluate it beyond the info below. While it would save me a good chunk of change, that''s only part of the equation - if there is a clear reason to go with one of the other two, I would do so in a heartbeat as they''re all within my budget - though Option B maxes it out. Thank you!