With the NIV Application Commentary series back on sale I'm left asking the age-old question, Logos or Kindle? Even when competitors have sales I can't bring myself to make the purchase too often if Logos also has the product since I'd much rather have the annotations sync back with Logos and be searchable therein (not to mention numerous other features). What are your thoughts? Have you enjoyed the "Send-to-Kindle" feature or do you prefer to stick with pure Logos apps? Or do you use numerous platforms at once?