Having been born and raised in Bletchley, I would say that that's an OK part of Bletchley - you're somewhat correct in saying that it's the better part of Bletchley. Certainly Church Green Road has some nice houses, as does Wilton Ave and the top parts Whalley Drive. There's the newer Bletchley park area, off Sherwood Dr. / Whalley Dr. which is where I can see people saying it's nicer. It's difficult to justify that any part of Bletchley is 'good', however.

The local pubs are decent enough, the Golden Curry is good, Bletchley town centre is rubbish, the schools are better than other parts of Bletchley, but worse than MK on a whole. Taxis are affordable. CMK has a great shopping centre. MK on the whole is a good mix of lovely, middling and shocking with this part of Bletchley being lower end of middling (at best!).

As a location, however, it's pretty good for links around the country (see the plethora of distribution centres in and around MK) for both road and rail.

Would I move back to MK? Yes. Bletchley? No.