From what I know, Sea Ark is up there with the best of them.
Just make sure to look at the bottom of the hull, if it looks like someone beat on it with a ball peen sledge hammer, the chines are flattened and bent over, the hull below the transom has been broken and re welded, the transom braces have been broken, etc., stay away! (yes, I saw a Lowe Roughneck like that). If it's been used on a river, some scratches or a small ding or two is normal and that would be NBD to me, but if it looks like it was towed to the river and across a boulder field at 80 mph with out a trailer, stay away!
If in reasonable shape, I would have no problem with buying that boat if it were what I wanted.