I've run a 21 Parker for my business for the last 4.5 yrs. (had an 18 Parker for about 5yrs. prior) and its a great boat, plenty of room and good ride. The 23 is a better choice but down sides are mentioned above and the fact that retail will run you about $10k more than the 21. The Jones brothers as mentioned is a fine choice and they ride exceptionally well, little better than the Parker, only downside from my experiece with them is they draw more water (important if your a shallow water fisherman) and the have a prononced side to side roll when at rest/drifting due to the sharper Vee compared to the Parker and walking side to side you really notice it.
Capt. Matt Tawes
"Temporarily retired from guiding"