Progress acquires IONA: Should it dump Sonic?

Back in the "winter review from hell" I installed, configured, integrated, orchestrated, tested, and evaluated eight separate ESB (enterprise service bus) products for Network Computing Magazine. Yes, I was a busy gal. I've tested some difficult products in the past, but nothing - not even CRM suites - compared to this review. One of those products was Progress Software's Sonic ESB. One of them was not IONA's Artix. That was because IONA's Artix was just preparing to make its entry into the ESB market, while the Sonic ESB was already well-established, like its competitors. Throughout the...