Well, looks like we are going for it! Went down again on the weekend - and decided it stacks up as place to live for various reasons (a large part of which will be proximity to my parents - and so the kids can have a closer relationship with g/parents, and I can 'do my duty' as my folks get older)
But we liked the city generally - I wasn't bowled over by the burbs, but will find somewhere that will be suitable. Really knocked out by the green space and proximity to the countryside.
Wife liked Roath Park (we might be able to afford somewhere smallish there) - the park is beautiful seems like a nice area generally, and she liked the idea of the kids going to Cardiff High (mainly as it is 20% minorities (my kids are mixed race)), but also its good rep. Downsides seemed to be a crap shopping area, and v. close to one of the campuses (I'm really done living in student areas - no offence

)
I liked Whitchurch, proper shopping area, good trains, out into the countryside, etc - wife disliked it as it wasn't very mixed and seemed dull to her.
Rhiwbina seemed OK - non-descript, Heath nice, but marooned by roads, Llanishen alternately nice and a bit grotty, Cyncoed and Lisvane v.nice, but pricey I guess. Llandaf North looked ok, but a bit tatty, nice there by Hailey park and taff trail - which was full of walkers and cyclists.
But we'll visit again a couple more times I reckon, be alot easier, leave the kids with grandparents in Merthyr - and we can decide on where we go....we'll rent for a while just to suss out the area we choose a bit more closely, and to take some of the risk of one end of the move.
Just need to sell my house and get a new job. Anyone know any big firms looking for business analysts in Cardiff

cheers
Gav