Pleco's are my favorites:
In my 140 I have a 9" Rhino, 7" Royal, 4" LDA01 Gold peckolita, 6" L128 green phantom & 5" L066 King tiger . (These are all over 5yrs. old)
In My 50gal I have 3" L083 gibbeceps, 2" L027 Royal,2" LDA05 Small spot, 2" L136 Many spot ancistrus, 2"L085 Xingu baryancistrus(I was told?)
And my new ones in the quarintine-grow-out tank are 5 L144 albino bristlenose 4 Longfin brown bristlenose 1 Albino bristlenose & 1 Red longfin bristlenose. ( these guys are maybe a 1/2" in size.)