Does "No budget" mean "No Money" or "I don't have a Budget"?
Personally, I like the 15-85 EF-S as a "walk around" lens, good zoom range, mine sems plenty sharp enough and the IS is very useful.
"No limit to my budget "
I don't normally use flash either, but the above is the way I interpret it.
Seems a bit contradictory to say it's "wireless" because ALL on board flashes will trigger a slave (provided it's within optical range).
"Wireless" to me implies it's got a radio transmitter that will trigger a remote flash
without using the on-board flash.