right now if I were to guess, I would go for this as the top 8:
1. Manchester City - I think no team is super strong this season so I think it will be a pretty low points total that takes the league, their home form should see them just edge out Chelsea.
2. Chelsea - a lot will depend on whether they sign a striker in January or not I think, if they don't then they will probably finish 3rd or 4th, if they do then they will be City's main challengers.
3. Liverpool - Suarez is on top form this season and Rodgers seems to have a fairly settled team/squad right now.
4. Arsenal - they always make the top 4 so it's a safe bet they will again, they got shown up a few times of late though (City and United games in particular), they still lack defensive strength and Ozil can't carry them all the way to the title, Giroud is good but nothing like Suarez good so they can't rely on him either imo.
5. Manchester United - like Chelsea I think United's season will rest on what they do in January, if they sign a couple of CM's and a winger or two then they may well still make the top 4, without that though I think they will probably just fall short, they are still very much adjusting to life under Moyes and whilst I think they will do so, without the signings mentioned the team just isn't playing well enough to make the top 4.
6. Everton - seem to have found the right formula so far under Martinez, not sure whether it will last though, I would guess top 6 is likely though that may change.
7. Tottenham Hotspur - managerial side isn't the issue for Spurs imo, the players they signed will need more time to adjust to the team and some of them are either not complete articles yet or just not quite good enough for them to really challenge for a top 4 place, unless the new manager is a complete dud they should still be well inside the top 8 though.
8. Southampton - made a great start and have some good players, I reckon they may well pinch a top 8 place this season.