I don't follow any of the traditional diets any more, having given them so much money in the past that I know what to do (don't we all?!)... it's really about getting the head in the right place, and you certainly do sound as if yours is.
As I get nearer my target weight (originally 11 stone, now 10 stone 5lbs), I find the weight comes off so slowly it's untrue.
All I can recommend is be sure to be drinking lots of water (I'm up to 3L now, but it takes a while); avoid white carbs; don't eat late in the evening; control your portion size... and if you're not happy with your weight loss, try to find some areas where you can make little tweaks. I was quite surprised when I got into this. My homemade muesli + Fitnesse flakes + ss milk breakfast, for instance, I now alternate with a boiled egg, light yoghurt and 1/2 grapefruit and I save half the calories and it fills me up until lunchtime also. So I've been alternating them and hence "saving" calories!
I cut out lots of "extras" that I'd unwittingly slipped into my salads, and now basically just eat the veggies (cucumber, beetroot, celery, spring onions, tomatoes) with whatever protein... halved the dressing I use... little things perhaps but finally I passed my plateau and lost a couple of lbs.
Trouble is, I'm off for a 10 day holiday tonight so I won't be getting back to "target" this month after all, but I'll definitely continue with my "experiment" next month.
I know what you mean about target weight. I think you know when you're there... aim high, then maintain for a while, then continue if you want to... then you shouldn't regain...
Good luck!