New GPU Advice - Replacing HD4850

I need to replace a toasted GPU. I've only used ATI and frankly driver support pissed me off
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APPROXIMATE PURCHASE DATE: ASAP (this week)
BUDGET RANGE:Under $200 Before Rebates
USAGE FROM MOST TO LEAST IMPORTANT: Design CS5, 2+ screen viewing, limited games (for time being)
CURRENT GPU AND POWER SUPPLY: Sapphire Radeon HD 4850 and Antec 650W PSU
OTHER RELEVANT SYSTEM SPECS: Intel Core2Quad Q6600, Gigabyte GA-EP45-UD3P, G.Skill DDR2 800 (4 x 2GB), 2x 22" Acer LCD
PREFERRED WEBSITE(S) FOR PARTS: Newegg.com
COUNTRY OF ORIGIN: USA
PARTS PREFERENCES: Sapphire (only b/c of previous experiences, not locked in)
OVERCLOCKING: Maybe
SLI OR CROSSFIRE: No
MONITOR RESOLUTION: 1680x1050 (or above)
ADDITIONAL COMMENTS: ??
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Haven't done much research, but I know anything will exceed my needs.

Pseudo Xmas present

Thanks
-jt