- Signal strength on both will be same. It depends on the Radio really, not the ROM.
- Both are fast and smooth for their respective builds.
- Cyanogenmod will have comparatively more bugs, because it is a scratch GB build from stock, and, WildPuzzle is basically a modified Stock ROM with many additional features. But, Cyanogenmod offers more features than Sense ROMs, and you have the advantage of the latest Android build (2.3.4 ATM)
In the end, it really boils down to whether you want Sense or not. Personally, I would advice you to try out Cyanogenmod, because, really, it has infused new life (for me, atleast) in the Wildfire, which I would never have thought possible with Sense.
LGE Google Nexus 4 16GB (Awaited)
iPod Touch 3rd Gen - iOS 5.1.1 JB | B&N Nook Simple Touch - Stock
Device History - Nokia 5110 >> Nokia 8310 >> Nokia N-Gage QD >> Nokia 6681 >> Nokia N82 >> Nokia 5320 XM >> HTC Wildfire >> Samsung Galaxy SII GT-I9100