limit orders

thanks to paul and leroy i have some more insight into limit orders that i really never gave much thought to. really good stuff. so now when i make a trade i will have to weigh in some more decisions.

one thing though i have thought which could be way off base is that on thinly traded stocks, alot of what i buy, a market order sets me up to be taken advantage of. you see the specualtors have to fill alot of these and they will make partial fills unless you have fill or kill order in, and drive up the ask and then you get stuck. is this correct? with a limit order on these stocks they know exactly only what they can get and can take it or leave it. also with small stocks it seems that they tend to accept lower prices to get out themselves as its hard to move a bunch of stock. these things and others make me trend toward a limit order. but if i am missing out on upward trends because of doing this maybe i need to reconsider what seemed too obvious to me. thanks.