Which would be better? Aetos by fenwick or st croix avid?

Fenwick ETS > SC Avid. I can only imagine how nice an aetos is...

Which rod length, power, and action are you looking for, and what lures do you plan to throw on it? I own a fenwick aetos, and it is a very sweet rod. It is really sensative, and has really nice sturdy and light guides, which are titanium. It makes for a very light weight rod, with really good backbone when laying into a nice fish. I haven't personally fished the avid, but there are a ton of people standing behind it. They both have lifetime warranties, and cost pretty much the same money. I'm willing to bet the aetos is lighter and a little more sensative over the avid. The aetos is fenwick's top of the line rod, and the avid is just where it starts to get good IMO. My bro owns a legend tournament bass rod, quite a bit over the $200 mark for sure, and I have used it quite a bit. I would put the aetos right up there with that. You don't hear much about the fenwick for some reason, but when you do it's usually good things. See if you can't pick one of each up at the store and check them out, and see which one suits you best.

I would not say either is really better than the other.  I think It really comes down to what you prefer for a handle.

I m leaning towards 7ft medium fast. I want to use for jerkbaits, cranks, spinners and wacky or trigged worms.

Having owned and used both Fenwick and St Croix products. Fenwick gives you more bang for the buck. To get a Fenwick on par with an Avid, you only have to spend $100 on the HMG.