I grew up in Manchester. Whilst Merseyway is a dump, I always thought Stockport had a lot of nice suburban areas such as Cheadle Hulme, Bramhall and Marple.
Manchester is ridiculously expensive to buy (over priced for what you get). There's a lot development going on around the Bus Station and the market square has been developed nicely with a lot of new bars etc. Quite a strong alternative for young adults with only an 8 minute fast train to Picadilly. Plenty of scope to develop or knock down Merseyway to improve the town centre.
I also find traffic is a lot more chilled out in the suburb areas, no matter what time of the week it is. As soon as you drive on to a main road in Didsbury or South Manchester in general and you hit traffic regardless of what time of the week it is, feels like driving in London.