I am going to purchase a dedicated .22 BPCR rifle and have narrowed the choice down to either a CPA 44-1/2 or a C. Sharps Low Wall. Being able to use multiple barrels on one action is not a consideration for me. I am reasonably familiar with and like both. My wife and son both shoot C. Sharps Highwalls for BPCR so I have some experience with the C. Sharps rifles. Price is close enough to the same on both not to be a deciding factor for me. What I am looking for is feedback from folks who have competed with one or the other, or both on what they like and don't like about their rifles. For the CPA, what lever do you have, and what do you like or not like about it.

I have a CPA that I ordered new in January of 2022.  It has the plain "S" shaped lever and a 28" Shilen barrel.  I shoot it most of the time with the Schuetzen sight from MVA, but it also has scope blocks.  I prefer to shoot with open sights if I can.  It has won its fair share of 100-yard benchrest matches at our local club.  I like the camming ability of the CPA, and it has good extraction.  I have no experience with the CSA low wall.  If you have any questions about the CPA, feel free to ask.  I'd be glad to answer if I can.

Ditto on the CPA 441/2.  I have several between my wife and I. No experience with C. Sharps.  But to reiterate, the camming action is beneficial even on the .22 LR cartridge.  Most have the ball and spur lever.
FWIW, the scoped CPA's have #2,  20" barrels. I found the shorter barrels were steadier off hand, and the with the scope, there's no loss of sighting radius.
The peep sight .22's have 28" barrels.
Mike.

My CPA has a 28" Shilen #3 weight which gives me the same rifle weight as my 30" 32-40.

I have one of each, it will boil down to which action you prefer or do you want the cpa just to broaden your horizons. My CPA is in sillouette configuration with a Douglas barrel
I would suggest you consider a barrel for the new build with a 14 twist. I had MCGowen build that twist for the lo wall, and it seems to hold better groups at the ram line ad in the 22 midrange matches than the standard 16 twist barrels we have

Shotgun butt best from the 22 BPCR and midrange games due to the most shots being fired from prone

The accuracy gains from the longer sight radius are pretty small, especially when compared to the gains in offhand when the rifle is well-balanced because of the shorter barrel. 

Thank you for the input and keep it coming. I limited my initial information because I did not want to prejudice the conversation any more than necessary. I started out with a Cresnoe liner in my 1874 Sharps and am currently shooting BPCR matches with a Stevens 44 with a 24-inch barrel that I relined with a 1:16 twist TJ liner. Those rifles let me know that I like the game and have gotten me to where I can fairly regularly shoot high AA class scores. I usually shoot 2 to 4 on chickens and 9 or 10 on pigs, but fall off on turkeys and rams. I know that a new rifle does not make up for a lack of marksmanship, but it doesn't hurt. I mostly shoot scope, but also use the rifle in our local cowboy silhouette matches where I usually shoot in the high 20s. I do not find the shorter barrel to be a significant handicap with the irons. Most of the shooters at the matches I have attended here in Colorado or in Wyoming shoot CPA rifles, but the 1885 and clones are also popular, and both seem to be equally capable of winning matches depending on the shooter. I would like to have a low wall and a CPA 44-1/2, but can only afford one or the other. I have had good results using Lilja and Shilen barrels in centerfire rifles and will probably use one of the other on whatever, and probably with a 14-twist if I can do so. Since I am capable of doing so, I had originally considered buying an acton and building whatever myself, but I already have too many projects.