Phantoms L200,L128 both are stunning Pleco can't go wrong with either neither are expensive even at larger sizes, or golden nuggets L18,L81,L85,L177, main difference is the size of there spots as far as I know, they can become quite expensive at larger sizes however, or maybe a flash panaque L204 don't get to big maybe 5"-6" max and there a beautiful Pleco and even at large sizes are cheap,then you have loads of hypans, snowballs are nice L033,L102,L142 all max out at around 6" not to sure on there current price however L106 orange seam Pleco are nice and cheap also and again max out at around the 6" mark you also have the LDA31 mustard spot, stays small 5"-6" and is cheap, there is also loads of brislenoses you could look into LDA144 lemons are nice and stay small or the L183 peppermint brislenose is also very nice and stay small, I could go on all night lol, it's just down to what you like I guess