This is a partial review as it will take me a long time to get round to watching all the episodes of the 4 series! I have watched 9 episodes of series 1 so far and am pleased.
The quality is good, remembering this programme was made in the '70s. It's not widescreen though the menus are (so on my TV I just leave it in 4:3 mode because it doesn't matter that the menus looked squished.)
The packaging is funky but very nice - cardboard outer with 2 digipacks and insert booklets. The clips which hold the discs aren't great but your discs can't actually fall out unless you were to maybe hold up the digipack and shake it around!
My only gripe is each disc (so far) is encoded with english subtitles engaged by default but it's a not a big problem because as soon as you turn them to 'off' (just a couple of presses on the remote control, not exactly a chore) then it's OK for all the episodes on the disc (unless you eject or power down your DVD player.)
The first series is a bit cheesy and I think at the time they were trying to promote harmony between 'african-americans' and 'white-americans' (sorry if that doesn't sound very PC, I don't know what the latest terms are..?!) as captain Dobey is actually quite pally with S & H, and of course so is Huggy. The theme music on the episodes I've watched is pre the famous theme tune and from what I remember of my youth the show was a bit grittier so I think (hope) the later series' will contain more 'mature ' episodes.
So for anyone in their 30s (I'm 36) who was a big fan of S & H as a little 'un, and if you can spare some time each week to watch a few episodes, then this is a massive bargain at less than 30 quid (less than a night out!)