I'm building a new system, and I'm trying to decide between two motherboards. The Gigabyte GA-Z77X-UP5 TH supports CrossFireX and has two thunderbolt ports and is $37 cheaper, while the ASUS P8Z77-V Deluxe supports 3 way CrossFireX and can support one more system fan (is that even important? The Deluxe has 6 compared to the UP5 TH's 5). Is the extra cost worth it for the Deluxe? I can also get an mail in rebate of $30 for the Gigabyte.