Yes, SD cards are more reliable, also easier to handle (my laptop has built-in SD reader). As for putting them inside my A1200 I do it this way:
http://krashan.ppa.pl/articles/hardware/img/ka47_view1_576.jpg
Or even this way (you can see Indivision AGA on this photo as well):
http://krashan.ppa.pl/articles/hardware/img/ka60_view1_576.jpg
Nonsense,Where do you guys come up with this stuff? More reliable than CF? nope.. CF is true IDE and takes no conversion through the pcmcia slot or ide on amiga. Its straight through,making them utterly more reliable with minimal access time. SD requires adaption from the parallel ide to serial style the sd card is which requires a custom chip, this not only adds latency(slower access time-although not that noticeable),but it one more conversion.
Not to mention flash ram is flash ram basically,addressed serial or parallel.
Introducing more complex chips into the equasion doesn't make it more reliable than a cf that plugs straight in,wired one for one with no conversion chips.
If you think cf is unreliable,don't buy cheap no name ones and or ones that are counterfeit off ebay/china etc. many sandisk extreme even have a lifetime warranty and you can reg them online.