Hi all,As a newbie to FS and these forums I was greatly impressed by the amount of skill and knowledge members have and I would be very grateful if you could review and recommend a system from the two options that I have detailed below (I do not want to make a mistake for the sake of a few quid). I will ultimately want to fly the PMDG 737NGX using yoke, pedals and displayed on 1 or 2 monitors.System 1: I5 2500K overclockedCase: COOLERMASTER CM690 MKII ADVANCED CASEOverclocked CPU Overclocked Intel® Core™i5-2500k Quad Core (3.30GHz @ max 4.60GHz)Motherboard ASUS® P8Z68-V/GEN3: PCI-E 3.0 READY, SLI, CROSSFIREXMemory (RAM) 8GB KINGSTON HYPER-X GENESIS DUAL-DDR3 1600MHz, X.M.P (2 x 4GB KIT)Graphics Card 1.25GB NVIDIA GEFORCE GTX 560 Ti 448 CORE (Ltd Edition Superfast Card)Memory - 1st Hard Disk 120GB INTEL® 320 SERIES SSD, SATA 3 Gb/s (upto 270MB/sR | 130MB/sW)2nd Hard Disk 1TB WD CAVIAR BLACK WD1002FAEX, SATA 6 Gb/s, 64MB CACHE (7200rpm) Drive 24x DUAL LAYER DVD WRITER ±R/±RW/RAMMemory Card Reader INTERNAL 52 IN 1 CARD READER (XD, MS, CF, SD, etc) + 1 x USB 2.0 PORTPower Supply CORSAIR 650W ENTHUSIAST SERIES™ TX650 V2- PLUS® BRONZE (£72)Processor Cooling COOLIT ECO II A.L.C ADVANCED LIQUID COOLER (£59)Thermal Paste ARCTIC MX-4 EXTREME THERMAL CONDUCTIVITY COMPOUND (£9)Sound Card ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)Network Facilities 10/100/1000 GIGABIT LAN PORT - AS STANDARD ON ALL PCsUSB Options 6 x USB 2.0 PORTS @ BACK PANEL (MIN 2 FRONT PORTS) AS STANDARDOr I7 2600 OverclockedCase COOLERMASTER CM690 MKII ADVANCED CASEOverclocked CPU Overclocked Intel® Core™i7-2600k Quad Core (3.40GHz @ max 4.80GHz)Motherboard ASUS® P8Z68-V/GEN3: PCI-E 3.0 READY, SLI, CROSSFIREXMemory (RAM) 8GB KINGSTON HYPER-X GENESIS DUAL-DDR3 1600MHz, X.M.P (2 x 4GB KIT)Graphics Card 1.25GB NVIDIA GEFORCE GTX 560 Ti 448 CORE (Ltd Edition Superfast Card)Memory - 1st Hard Disk 120GB INTEL® 320 SERIES SSD, SATA 3 Gb/s (upto 270MB/sR | 130MB/sW)2nd Hard Disk 1TB WD CAVIAR BLACK WD1002FAEX, SATA 6 Gb/s, 64MB CACHE 7200rpm)(1st DVD/BLU-RAY Drive 24x DUAL LAYER DVD WRITER ±R/±RW/RAMMemory Card Reader INTERNAL 52 IN 1 CARD READER (XD, MS, CF, SD, etc) + 1 x USB 2.0 PORTPower Supply CORSAIR 650W ENTHUSIAST SERIES™ TX650 V2- PLUS® BRONZE (£72)Processor Cooling COOLIT ECO II A.L.C ADVANCED LIQUID COOLER (£59)Thermal Paste ARCTIC MX-4 EXTREME THERMAL CONDUCTIVITY COMPOUND (£9)Sound Card ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)Network Facilities 10/100/1000 GIGABIT LAN PORT - AS STANDARD ON ALL PCsUSB Options 6 x USB 2.0 PORTS @ BACK PANEL (MIN 2 FRONT PORTS) AS STANDARDFirewire & Video Editing 3 Port IEEE 1394a Firewire PCI Card (£9)Operating System Genuine Windows 7 Home Premium 64 Bit - inc DVD & LicenceI will also be using Gen x scenery and Rex2 weather gen.Money is tight so I do not want to spend money where I will not necessarily gain any benefit.Many thanks to all those who can help.Ceddy