Not to sound like a broken record........If you are a low time new hire don't worry about it. Unless we have another 9/11 upgrade times should be back to normal which is about 3 years. Trust me, given the fact that it takes about 3 to 4 months to get you online, another couple of months of reserve, then throw in a few vacations, recurrent grounds, etc. by the time your ready, the upgrade will be there.

Here's the broken record part. Don't pick an airline on upgrade time. Pick as if the day you get there, you face a 50/50 chance of being there forever. If your goal is to treat the regional as a stepping stone (not that there's anything wrong with that...) then coming from a quality company with ALPA representation is just as valuable as quick PIC time. Proof?

Recent Delta new hire class broke down something like this
1 Skywest
2 military
1 Republic
2 misc regional
1 corporate
8 ASA

this is from memory so don't skewer me, but the point is accurate.

Stick