Their is a little stamp next to the trans thy start with b,d,h,k,f, or j(their are some others)after the series is the displacement so 15,16,17,18,20,21,22,24 so on.So a b16=a 1.6 litter a f22=a 2.2 litter.Usually the vtec dohc engine are stronger.And if you don't know vtec is an extra high lift high duration cam lobe the kicks in at higher rpms so you have the best of both low end tork high hp out put on the top end.Some engines also come with a 2 stage intake one short runner one long one
If you are looking for some thing affordable and a good power output i like the acura integras thy come with a b18 non vetc(except the gsr or the type r).Try to test drive a second gen integra(1990-1993)or a third gen integra(1994-2001).Thy have a nice feel.Or go with a civic thy have a huge aftermarket following and you start with a d witch can be turboed or swapped for a b,h or k(check out hasport.com for the mounts).Crxs are light also have a huge aftermarket following.Preludes are good also starts with an h or f motor.
All hondas are good in their own way.Read a book i recommend the honda and acura performance handbook by mike ancas to get you started.Warning honda and acuras are addicting and all your ford friends will not see the lite.I started a die hard gm fan hating hondas but now look where i am a honda chat form lol.