Miami DX with a wifi card currently on my A1200, mostly because it's nice and easy to use, i mainly go online to get on my file server over the network and to download stuff on aminet etc, I don't really surf the net on a 030 for anything but downloading files.
Speeds are little under 300Kb/s (2,4Mb/s), feels slow when im used to gigabit fiber on my faster machines but fast enough for what I use the miggy for and if I want large files I just transfer them via CF.
Might give the others a try if/when the phoenix core is done for the vampire 600 on Amiga 600 tho, currently I do not go online with that machine