I came across a BE Avenger n a BE Stingray for about $40. I've been reading up on them AFTER i got them n found that most ppl generally hate BE markers. Eventually, i plan to throw down some money on a marker thats worthwhile but i figure i'll get a little experience first. So, here's my question: How much of a difference will putting a 32 degree terminator barrel make? Also, what would i gain w/ a regulator n expansion chamber? I'm not planning on spending the cash to upgrade a gun that's crap from the start but the knowledge is still nice to have. Thanks for any input.