Pierre,
I know that this is late, but, my Crown D-150 that I have been using since '77 just had a channel die. My tech suggested that I check out the new Crown XTI series. I found those a little pricey for the amount that I play these days. I did find the XLS series that he also said would be just fine. I settled on the XLS 402, $399.00 at the local Guitar Center, but, I found it on an E-bay store, Digital Shopping Network for $240.00, $30.00 shipping and get this, a $120.00 Crown mail in rebate, total cost $150.00, 300 watts a side @ 8 ohm, 450 @ 4 ohms. It arrived in 3 days. I tried it Sat. night with my F-2B and my 2 Bag End single 12's. It sounded great, much more power than I'll ever need. At 26 lbs. it is not light, but, not too heavy either. It just seemed too good a deal to pass up. Good luck with the search. Let us know how you make out.
Kenn