Oo yes Colwick Avenue is in our desired area, we are a little bit north of that but not far, (in catchment for Navigation Road). It is a nice quiet street and near to both tram stops. Basically any streets around the Barrington Rd area are good (Barrington Medical Centre are ace too - i can recommend all of their GP's).
You cant go far wrong with Navigation Road Primary, that is going to be our first choice, as we are doing the admissions from September this year.
If we dont get Nav Rd we are also putting some schools nearer Timperley on our preferences, such as The Willows, Heyes Lane etc although we would struggle to get into HL as we are prob too far. I was also going to say that Forest School is a private school if you are willing to pay the fees.
I would certainly avoid the Broomwood area the school does have a reputation.
Broadheath is a tricky one, it is OFSTED rating 1 (outstanding) but a lot of families tend to want to avoid it. However the Stamford Brook estate which has just been built next to it might start and remove that reputation. FWIW a friend of mine works closely with Trafford schools (not as a teacher - as a community worker) and finds the level of education and school cooperation at Broadheath excellent. However i think it is the families there that give the reputation. I dont know why BTW...
If you go for Timperley way then as i say The Willows and Heyes Lane have excellent reputations, as does Park Road, but on the other side of the coin, Park Road has a reputation for being excellent for the 'Gifted and Talented' but does not encourage the more 'average' students. Again my friend (the community worker) doesnt have as good a relationship with that school - again i dont know why.
Now if you are going further south, ie into Hale and Bowdon you are literally spoiled for choice. All these are excellent schools (but pricey to live in): Bollin, Stamford Park Primary, Elmridge etc etc. If you get in there i will be 
All the very best of luck - another one offering assistance if you want to PM me!