Best Genesis emulator for PC???

[RChickenMan]

What is the best Genesis emulator to use for PC (running windows xp)?. I used to use Genecyst, but it wont run on my new computer (im not sure if its because my new computer runs xp, or the different video card, or what). I have tried something called Gens, but it just causes my system to freeze. The one i am currently using is called Megasis, which i am mildly satisfied with, but it doesnt have any sort of advanced video options, such as a high resolution mode or anything like that. Thanks for your input.

[Kwyjibo]

[Alexander]

[Fusion]

[sponge]

[RChickenMan]

gens wont run on my computer for some reason. ive been using Megasis. It does everything i need it to do. I was really looking for something zsnes quality, but i guess nothing that good for genesis exists.

[Fusion]

[(TSC)Bender]