another very safe and common recommendation is yorkville ysm1 monitors, either active or passive ysms. Passives cost much less but you need a power amp to drive them... from personal experience (and a good amount of knowledge of audio reproduction) if you must save money then passive is fine, most good home consumer amplifiers will only cause small changes to your sound, while using anything other than real quality well designed true studio monitor speakers will make a very big detriment to your sound.
Yorkville ysm1 monitors are comparable to good monitors worth 2 to 3 times their price and are one of the best pairs you can get in entry level pricing for home or project studios. I have a pair in my home studio ($300), use genelecs in my work studio ($4000). I have worked in one real pro studio that used ysm-1s as their main monitors for tracking and preliminary mixing, even with yamahas and ribbon monitors available, because the ysms had the sound that the engineer was used to and provided plenty of detail for finding faults in the tracking. It's a matter of taste, but my point is that you won't find edirol in any pro studio being used like that, but the price isn't that far off between yorkvilles and edirols, so maybe consider yorkvilles. Same goes for krks, excellent for their price, although not as deep, clean, true (fundamental, low thd) bass as the yorkvilles for the same price.
Not pushing ysms really, but think if you're considering edirol, looking for entry level, you might as well go for what is sort of a smallish industry standard entry level pro quality monitor like ysm or good krks (krk makes many different models, don't know how each stacks up, but the old old old krks were good, the passive rockits that don't exist any more, so prob many newer ones are good too, and they're inexpensive for the quality). Sometimes you can find used event 20/20 or similar on ebay for $250ish, also a great investment.
I'd buy any of those over edirol monitors. I just researched edirol monitors and did hard listening tests to them at the store, even did a blind level-matched a/b test with ysms, edirols (6 inch woofer ones I think), samsons (I think they were samson ribbons if memory serves), and a pair of genelecs (which I know really well from my work). I was looking for a new set for my home studio. I ended up with the ysms, provided a similar sound to genelecs, definitely the pair with the true-est bass (besides genelec of course which were just my reference set, not considered for purchase), not just upper harmonics with a big q at 85hz, and I liked (but not loved) the midrange since it had an apparent flatness to it that I couldn't have gotten from yamaha ns10s or anything like that. Highs were great, very highest a spec crisp but I like that when I'm tracking and mixing so I notice things like hiss or crackles before I begin mastering. Not quite as detailed in the lower highs as the samsons, but MUCH more even response which is important since I was going to be using them to do all mixing and mastering as well as tracking and preliminary mixing.
The edirols, honestly, sucked as far as detail goes, but they did sound good, like nice bookshelf speakers, but definitely didn't expose as many mix issues as the ysms, so for me that is a dealbreaker. They were good in the mids and lower highs for finding errors, a very critical range, but not in the bass, midbass, lower mids, and upper highs (at least to my ears, you know this is subjective right?) You need to hear the mistakes in the mix, that's the MAIN reason to get monitors in the first place, mixing levels is secondary (and in some cases is better done on regular speakers, don't flame me, just making a point). So I walked away with YSM1s. passive. Despite the fact that I said I'd never buy yorkville speakers for monitor work, just because I figured a speaker specialist company would be better. Go figure, I was wrong, ysms are really great for the type of all around monitor usage I need them for.
Cheers
Don
