Blending the vocals is indeed one of the hardest part in mixing. Here are some ideas and tricks I use. Also an rough effect chain..
- DeEss - I prefer to clear it up right at the start. Makes the rest of the processing much easier.
- Compressor - I tend to use multiband (C4 usually) or even many C1s "tuned" to different problem frequences.
- EQ - If I can't fix all the problems with the multiband (or get the sound I want) I EQ here. I usually try to avoid EQing vox (unless there is really something that really needs to be fixed or sumthing..) because human ear tends to notice even the slightest anomalies in vocals. So if you EQ make it with extreme caution. Also sometimes if I want to have a bit more "produced" sound this is the place where I tweak those "radio sounds" in.
- Compressor - Another normal nice sounding "main compressor" to give some fatness and even it out a bit more (not neccesity thou..).
Effects:
- Usually vocals have 2 verbs. One close and one ambient one. Really can't give any secret recipe for these.. I mean I usually tweak the vox verb as long as the vox itself. Having the right vox verb(s) for the song is IMO crucial.
- I often use some delays to give it more depth if needed. This delay/delays are usually things that you really can't hear from the full mix, you just feel them. If you hear them, then they are acting more as a pure effect for the song and not as a vocal processing tool.
- Almost every time I duplicate the vox track (copypaste) to a another track. Then I comp/EQ it very heavily. Again the way you do this depends very much from the sound that the vocalist has. Then this EQd/compressed vox gets spreaded over the stereofield. You can even do this with 2 very short delays. The best thing to spread these tracks is some nice harmonizer, for example try some Eventide here and weep hehe. Anyway, after this just mix it in with the original vox. Again you really aren't supposed to hear this track. The main function for this track is to give some "shoulders" and precense for the vox. If you can clearly hear this track then it is most likely way too loud.
Hope you get something out from this
EDIT: Oh and by the way. To get the vocal to "sit" doesn't really depend from those "tricks" or anything. The approach varies every time. It is the mixing that eventually nails it. Those are just some tools for it.