Will make my first post an easy one.....The new zd's have just arrived in Oz and after plenty of research have decided to take the plunge, although they cost US$22,000 here. If anyone is running the mulch kit can I get some feedback. Does longer grass slow the engine down? Do you need to make a second pass? Is quality of cut as good? Is it a big process to change back to side discharge? At $400 for the kit I'd hate to be dissappointed. Thanks.