We're comparing Premier League clubs to Premier League clubs here, though (except in Joel's case, where we're comparing Premier League clubs to lower league clubs). Our defense does not play any better than most of the clubs we're comparing ourselves with -- you can tell because we give up more quality scoring opportunities and shots on target than almost any other club. Some of that is almost certainly due to Howard not doing a good enough job claiming crosses, but it's ridiculous to just wave your hands and pretend that all of the other scoring opportunities we give up are simply because Howard doesn't organize well enough or the defense is too nervous because of him or something. We give up a shocking number of shots. Howard is one of the busiest goalkeepers in the Premier League. Yes, he makes a fair number of mistakes -- he's not an elite goalkeeper or even a top 7 goalkeeper. The thing is, though, he doesn't make them at any higher a rate than any other of those mid- to lower-table keepers. If he really did, we'd be at or near the bottom of the league in goals conceded, not 14th.
Is Howard good enough for our club going forward? Clearly not -- he's a mid-table quality keeper now and one of the oldest players in the league.
Is Joel a better option? I don't really know, but no one has seen him in action more than Roberto Martinez, and Martinez clearly doesn't think he's good enough to be anything more than a cup keeper and backup in case of injury. Martinez has every incentive to play Joel in the league, but he clearly doesn't trust him enough, even though he's under immense pressure to drop Howard.
So clearly we need to sign a new goalkeeper before next season, and that new goalkeeper needs to be someone who's good enough to regularly start for a team challenging for a Champions League spot. Anyone disagree with that statement?