I recommend the PNY NVS 440 video card in conjunction with 4 Dell 2408WFP monitors.
Trading in front of 4 of these monitors is great and you get a resolution of 3840x2400 - you can fit 40 TT ladders on each monitor.
Unless orientated vertically, I personally find the 30" screens too big for trading.
Both the NVS 440 and 450 cards are great cards, and I would chose them any day over the Matrox QID cards. You can get the PNY NVS 440 from ebay for around 200 GBP, but the NVS 450 cards dont seem to be going cheap anywhere.
Trading in front of 4 of these monitors is great and you get a resolution of 3840x2400 - you can fit 40 TT ladders on each monitor.
Unless orientated vertically, I personally find the 30" screens too big for trading.
Both the NVS 440 and 450 cards are great cards, and I would chose them any day over the Matrox QID cards. You can get the PNY NVS 440 from ebay for around 200 GBP, but the NVS 450 cards dont seem to be going cheap anywhere.