I am a complete no0b when it comes to recording devices and classical singing so please don't devour my soul!

That being said, I have read a ton of threads on here and all contain great advice that I have already learned so much from with hopes to learn even more.
I am a soprano with a large voice (don't run away screaming just yet!

) studying at the college level. I've recently made a lot of vocal progress and have been able to finally get my voice to open up and be free, but along with such good news comes the bad. Because I have a large voice and having worked extensively on it, I am now at the point where my old voice recorder(an Olympus WS-300M) that I use to record my lessons no longer provides me with an accurate portrayal of what I am doing in my lessons.(I doubt it did from the beginning!) It simply can't handle the volume that I produce while singing especially when singing high notes.
I was wondering if you guys could possibly recommend some digital recording devices that would be able to provide me with a better sound quality that I could use for lessons but maybe also a multi-tasker that could also be used for occasional school recitals? I was looking at the Zoom H4n but I'm not sure how that would react to a large voice...keep in mind too that I am a
college student so try to stay realistic budget wise a.k.a no more than 300.
Just to give you guys some reference to what space I use for lessons, it's just your basic living room type of set up. The floors are carpeted, there are wall decorations furniture, a piano and a lot of bookshelves to soak up sound. The space is not like a recital hall although it does allows the voice to ring nicely at a quiet/normal volume level, anything past a certain decibel and of course the curse of having a big voice in a small space sets in!
I really am interested in learning more about recording and especially acoustics. It's amazing to me how many different aspects effect sound and they way we perceive it! Not even just outside in the room but also for a singer inside our own heads! It's simply fascinating and I have the utmost respect for anyone willing to devote time and energy trying to figure out all the different things that go into creating a certain sound in a certain space. Our jobs aren't as different as a lot of singers would like to believe.
Any how...I'd appreciate any feedback or even just a nudge in the right direction. Thanks!
