Do yourself a favor and get the G30. Same darn size by a hair's difference and you can use the G21 hi caps and have tons of accessories and have the most accurate Glock.
Plus that the recoil from the G36 is greater than any of the other 45 ACP Glocks.
People are ditching their G36s. I've seen a couple here but only seen one G30 for sale used in two years. if they keep it, it's good. If you commonly see them in the consignment section or used gun section of the glass, think about it hard. Because someone didn't like something about that gun enough to ditch and lose a good 20-30 percent of its value in the swap.
If size is that big of a deal, snag a G27 with 40SW ballistics.
But I'd get the G30. Goto GlockTalk and read up!
Love my G30!