I have spent hours reading through forum information before purchasing my first robotic cleaner...seems to me that having the option to use both the filter bag for alot of leaves and also having the cartridge option is the way to go...looking at the DX6 or the Premier (these seem to be the only units that offer both options)can anyone give me feedback on these units or your thoughts on why i should look at other models? I definitely want the caddy and the remote....thanks for any information.