which sat card

[slick_50x]

1)
been reading on the site for tsreader and found there's 4 satellite transmission standards
dvb-s
dvb-s2
dss
dcII

tsreader's card compatibility list shows this
Twinhan DST-1020a satellite card. Supports both DVB-S and DSS standards.

this twinhan model supports 3 of the 4 satellite transmission standards but I can't find a card to buy. Looked on ebay and the twinhan website but it appears to be a discontinued card.

is there a sat card that supports all 4 satellite transmission standards?
does dvbdream support all 4 standards?

2)
some sat cards come with special chips for decryption do I want these cards over others or if I ever need to do decryption can I let my computer do it?