well thats a good question i have coolsat 5k and like it.. i think i would also like the Merc II and Traxis 3500 ( they all sound easy to use like the coolsat and alot of members have them here . also if you like the pansat you might want to stay with that. look at several of the gold sponsors they sell a few of the receivers.
SatelliteAV = have dealt with them & they are very helpful.
Sadoun = have bought from them & they have a very helpful site.
other gold sponsors sell fta receivers also
another thing to remember and to ask the person you buy the receiver from is who will stand behind it / service it if it fails or are you in the cold.