Check out the Great River MP-2NV preamp it is absolutely stunning and will give the needed boost to all your other gear. It is a pricey piece of equipment but delivers beyond your dreams. Along with mic inputs it also has hi-z for guitar/bass DI. The rich bass and detailed sound will make your jaw drop. The feature set includes impedance and loading switches that should not be under rated as they are very effective. It has an insert loop for outside processing. The Great River is also available as a single channel pre if you want to save $$. Sound & features are same as the 2 channel version.
In my opinion, I have never seen a computer plug-in reverb that performs up to an external unit. I use a Lexicon MPX500 that I'm very pleased with. Lexicon's new MX200 unit is interesting as it uses USB so you can use it as a hardware plug-in to your software. I haven't tried it but the concept is right on the mark. Yamaha's SPX2000 is another great unit, would like to see it with USB like the MX200.
If you can rent mics then that is the best way to choose your next purchase for sure. One mic I own that gets the most use is an AKG C414B-ULS although your RODE probably does similar duty. The Audio Technica 40 series mics are where I'd be looking for my next purchase.