all the reasons that fishfreak points out are the reasons that i have started my system with a sump. however, going sumpless peaks my interest. on another very high traffic forum, a lot of members have gone sumpless with good results. some of the points that they make are...
1. less electrical load
2. less heat if using a submersible pump
3. noiseless operation
4. no chance of overflowing system
not bad points. i think it comes down to personal preference. i also think that going sumpless on large systems probably works out better than smaller capacity systems.
at any rate, i just wanted to see what you all thought. i would like to have heard from those that are sumpless. on the other forum they said that many people don't say they are sumpless so that they don't get flak! however, on that forum, italso seems like the "sumpless" are beginning to come out of the closet!