The TRV33 is still around - I've got a couple in my shop!
The HC40 is basically the same, just a bit smaller, but the TRV33 is a good size anyway so shouldn't matter much as its a bit cheaper!
The DVD cams are great just to film and playback on your DVD player, but for editing, DV is still the best. The new DVD cams are a lot smaller than last years - not much bigger than DV cams now.
DVD cams record pics onto DVD so they don't use memory sticks anyway.