I’ve been printing with my Replicator1 for just about a year and a half now. Here’s what my Penny Catapult prints looked like when I started out. (This print’s a veteran of many Seej battles.)
That cross-grain seam in the catapult’s side arm is probably caused by two pieces of blue painters’ tape butting up against one another. I do all my PLA printing on painters’ tape whether I’m using my Rep1 or Printrbot Simple.
One major difference between these two prints is that the top is ABS and the bottom is PLA– after a year of working with both I’d have to say I definitely prefer PLA. It smells better and heats up more quickly, which saves precious minutes of printer warming when repeatedly iterating through a design.
You can get a mirror-finish base with ABS, but apart from that I can’t see a reason to bother with it. Most of my stuff doesn’t wind up in high-stress situations so the added strength isn’t much of a draw for me.