You'd be underpowering the Shiva's a bit, I haven't heard shiva's so i cant say anything about them, but V-max's are perfect for that setup, and they do sound good especially for the money.
Shivas actually reach full excursion with about 300W RMS, so either will work well with the amp. SQ I prefer Shivas, for a little more SPL go with the V-Maxes.