I've got alesis monitor and all.. I'll say this.. "they rock." yep, they are not the most expensive and best around, but you can get a good result with a little practice..
As far as vocals go.. "nothing beats a vocal booth." You would be surprised how many major label albums are done, where the second vocal mic is something like an SM57..
If you don't have a vocal booth.. you need... "extreme quiet," and to set up your room in the best way possible.. ( I leave this as your research homework, as its a lot of info to type, and a little beyond the scope of the thread. )
Another thing I know nothing about is FLStudio, but I'd certainly try and see if it shows up as a rewire synth.. ( assuming Sonar Studio has Rewire as a feature. ) --- Freeze tracks, to lower your latency.. and do the vocals takes and now you can mix proper...
I know nothing about your microphone, but I would be cautious to the say the least as, "great vocals are not about lots of compression and eq."
When you are recording the human voice.. Mic teqnique, and room accoustics; quality of the mic, and microphone cords, quality of the preamps, and ad da converters.. will have way more to do with anything than, "compression and eq."
When we are talking about todays vocals, often time we are talking about, "melodyne, autotune, or the v-vocal, or INSERT-- Vocal processor plug here"
You can't win without these things.. but YUCK imho...
I'm always impressed when I listen to an album that is, "pre cher-effect," and basically what is heard are great vocals.. as in, "the vocalist just plain rocks, the recording was done in a proper booth, with a great mic, and then engineer slapped a lexicon hardware reverb on the send."