Hello and welcome!
I'm new to the MK5, I only picked it up 3 weeks ago, and I do the same driving as you, nice to have a plaything, isn't it!
I set out for a blue GTI with leather, sunroof and nav and ended up with red, fabric, no sunroof and a basic HU, but I got it for a very good price. I did look at a few with leather and found them all to be pretty knackered, even at 40k. I wasn't a fan of the fabric, but I love it now. My car has 55k on it and they still look like new.
Mine has Xenons, and to be honest I'm not that impressed by them. Its my first car with xenons and I don't know what all the fuss is about. I don't like the headlight washers spraying with the windscreen washers as it soaks the front and side of the car, and sure they're brighter, but they don't go much further than halogens (I have a 06 Caddy for work with halogens and I can see just as much), however the blue colour is pretty cool, as is the auto function and come home lights...great touches!
As for DSG, I have a soft spot for autos, but I've heard a few bad stories and I've heard the cost of a replacement unit, so I chose a manual.
I wouldn't go for a MK6, the MK5 had much more time at the factory, the MK6s are simplified versions which go out in half the time. Sounds like they're gonna fall to bits, or the quality's dropped.