Jay, I'll be curious to read your impressions. The ps500 and RS1i and HE500 are my short list. Just haven't been able to audition anything beyond the 325. So, far I'm leaning toward the HE500 as I haven't been able to audition the 500 and RS1 and I thought the HE500 would contrast well with my 225s when I auditioned at a meet a few months ago.
I remember you had the 225 as I do....please do a follow up post when you have some time.