La Crosse Technology is the company I believe you are thinking of and the model most people speak of is the BC-700.
I went with a Maha MH-C800S myself... I preferred the extra bays
I have both, the Maha first when I had non-LSDs and wanted batts topped off, but I only pull out the LaCrosse now when I'm swapping out LSDs and getting the discharged ones recharged before going back to standby storage.
Since I don't have anything that uses more than 4 batts at a time I rarely need to recharge more than 4 at once now w/ LSDs. In addition to refresh (which the Maha can do) the LaCrosse can also test and give a max capacity to help me match batts together and also feel out if a batt is really done (just do a refresh and test, a couple times, and note if the max cap improved).
Only issue w/ the LaCrosse is if a batt is too far discharged (but still useable) it won't detect it and charge unless I pop it into a dumber charger and give it a bit of juice.
I'll pull out the Maha if I'm using a game console for a party, since there'll be some definite batt rotations, and I only use old non-LSDs for something like that.