My experience with them is that most importantly they have great temperaments, very genuine and honest sorts. I've never been able to figure out how to upload pics so here's the link (he's the bay obviously 
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I have a wonderful dun 16hh TB x Section D from Langarth stud, by Langarth Triple (TB). He does everything and his temperament is lovely - intelligent and willing but pretty laid back. The children ride him as well as me. My horse of a lifetime.
My lad seems quite similarly built to many of these, we've been asked if he's a lot of things (including at least part warmblood!) but we have no idea.... pics....
. He's a total loon in the stable, has to go out 1st or he'll climb over the door and has come out through the jockey door of a trailer beacuse he got himself in a state about being on there on his own, but he's the sweetest horse ever to ride. He events to intermediate but will hack out with novices on him and my friend's 5 year old daughter has a plod round the school on him now and again, he's an angel for her. He's so talented but does have the odd screw a bit loose!
His dressage was pretty good We were 10th (got to do the prizegiving - yay!!) in the the prelim and 18th in the Novice winter BD nationals in 2007
He looks just like my friend's horse - 50% Welsh, 25% TB and 25% Warmblood. He's a very special lad in more ways than one
He's an oddball, thats for sure XD 'Special' is about right, although he's the opposite - great on the ground mostly, but has his 'moments' where he's practically scared of himself 
He's only 6 though, and he is getting better, slowly!
We want him back though, he was the perfect pony Shame his old owners won't tell us who they sold him to. Sol, these are the *difficult* people who I told you about, remember?
haha, not sure if he's for sale atm
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Yes -those- ones
He was really good, well, once I got him thinking 'work properly like a dressage pony' rather than 'stick head down and bulge underside neck muscle' - he wasn't too impressed, he did a bit of napping and bucking, but we did it. In that picture, I'd only had him about 9 months. The following winter, we did the BD nationals, and were placed!(Even after having a traumatic journey, the lorry had a blow out - thankfully they moved me to the end of the class
I hope you find him soon!! I don't seem to be having much luck!
His dressage used to be that bad that me and my 13.1 who didn't even *properly* go on the bit, beat him in the PC ODE on the last day of camp - We won that overall, out of the whole camp!! Mum saw him jump (she's a Sjer at heart) and wouldn't let his old owner *not* buy him And I fell off when I tried him for the first time. I din't know how to ride with my legs 'off', so we were kinda galloping a 30m cir clein an uneven field and he tripped, launching me out the front/side door ... Okay that was a whole lot of pointless info about my life lmao!
He was in 'show pony' mode. Oh did I mention he was 6th at HOYS? lol, too many results to mention!! The aids he was used to was hands fixed low and wide-ish --> bulging underside neck muscle aka pretty showing pony
I've told you, move in to our spare room, keep Dante over the road at my instructor's, and have lessons from her
Being launched off pony at gallop.... not so fun! Looks like you got there with him eventually though