Also i would like to say that weight and size are not really that important to me, as much as i think that the H-Clamp is a great device, its just not for me as i don't like mounting nothing that big on my bass, my little audix clip on already looks ugly to me

anyway, i wrote to Bob Heil (who by the way seemed to be a very nice person, and always answered my emails promptly)asking his advice and this is what he wrote me back:
"I guarantee that if you place a
PR 40 in front of your bass you will NEVER
find anything to top it. NOTHING - at any price. We hear - day in and day out - from artists, FOH and broadcast engineers who marvel at the sound of the
PR 40."
Talk about confidence on your own products,

.
At this point i think that either mike will give nice results, i will use the mike anyway only on those shows were is viable to use it and where the acoustic conditions are optimal, on the regular noisy bar/club i will keep using my little audix condenser.
Either the EV-20 or the Heil
PR 40 will substitute my 40's Altec ribbon microphone that sounds amazing live but its too delicate to carry around and atracts too much atention, not the 1st time that some drunk a.. picks it up and blows on it or start singing ... so far i was lucky that nothing happened but i just dont want to carry it around anymore, ill keep it for studio where this mike really really shines.
thanks again
Nuno