Windows 7: Latest Version of Adobe Flash Player

I couldn't find an answer from this thread but what is the best browser to use for 64bit Win 7 if one want's to use Flash pages (i.e. FarmVille)? 32bit Firefox works but uses loads of memory and starts lagging bad and as I gathered there isn't a working Flash player for 64bit Firefox. I really would like to know does Flash player work fine on any 64bit browser?

Fixes and Improvements in Flash Player 10.0.42.34
Flash Player 10.0.42.34 includes security enhancements desribed in Secuirty Bulletin APSB09-19.

The following fixes have been made in this version:

65 general stability fixes
When two AVM1 SWFs communicate with an AVM2, SWF, and all SWFs are on different domains, LocalConnections fail. (2445218, FP-2746)
Windows exe installer is hanging at runtime and resulting in a failed install. (2381855)
Settings Manager and error dialogues need to use the correct URL for those URL's in the form, http//user:[email protected] (2401220)
When setting UI with WMODE=transparent, the text in the camera/microphone dialog is unreadable on Windows with Safari browser only. (2455584)
The default 'check for updates' (Auto-Update) frequency should be 7 days. (2444320)

Addresses six vulnerabilities with arbitrary code execution risk.
Adobe has released an update to its Flash Player and AIR products, which address several vulnerabilities rated critical. A number of six arbitrary code execution flaws and one that can lead to information disclosure have been patched.
On December 3, the Adobe Product Security Incident Response Team (PSIRT) disclosed details about the company's upcoming security update for Flash Player to get people ready for the impending patching process. The Flash Player 10.0.42.34 and AIR 1.5.3 updates shipped yesterday, the same day when Microsoft released its scheduled monthly security bulletin.