My HOS 3.75' plastic Collector is great. Well-weighted and a design I like, but there are mold lines.
If they bother you you can always take them down yourself.
If you'd rather not do the work one can always opt for an inexpensive but still very nice wood set.
No chance of mold lines there!
One can get something like this, which would be excellent for most everything a plastic set would be good for:
I have a set like this and it weighs 2 lbs.
Also, try this thread
http://www.chess.com/forum/view/chess-equipment/cheap-wood-vs-nice-plastic
I'm looking to buy a quality set with a heavy weight , matte finish, little or no molding lines. Is it HOS, The chess store, some other site? I like the HOS sets because they a more traditional. The Chess Store has some pretty cool looking sets ,rooks and knights look nice and different, but a couple reviews said the weights rattled on a piece or two from there. Any other suggested sites? What do you guys suggest?