well it's not just about capacity. Really high capacity (2700) have very hihg discharge rate, after about 10 cycles. Which means they emty them selfs in a week or two. Making them useless in most devices, unless you want to charge them every week. 3800 mah is just a plain hoax.

A low self discharge battery is suitable for devices that uses less power. I use them in flashlights, mine camera (i don't make that many pictures at once), etc. I wouldn't call them battery's for lazy people. They are way more practical in many everyday devices that uses less lower.

Just get the right battery for a particulair use. I don't need ultra high capacity. 2000 mah is good enough for me, because i never drain battery's at once.