I agree with tim1 about the fender being easier to get a grind out of. The problem is that it is a short path between grind and crappy distortion with the Fender. If you have to get loud , you may easily get past the grind and into the crappy distortion. If you don't have to get too loud , the Fender may be the way to go. The ampeg will grind if you set it up correctly and it's sound will also stay tolerable even if you have to get pretty loud. The hlf is a bit boomier cab but for your type of music , this may be a good thing also. So I guess I really didn't help you much here. I still think I would prefer the ampeg anyway. I'd rather have more rig than necessary than less and you can crank the ampeg harder without getting into the crap zone. Then again , that may be the sound you are looking for. Oh great , now I'm gonna toss another worm into your hamburger. That hlf is a whole lot heavier than the neo. This isn't helping much , is it?. I'm going to bed now. Good luck.
edit: Try to listen to both and see which one suits you best.