Yes MissLittleMissIcan'tbeBothered I do have personal experience as I qualified though the CILEX/FILEX route and then went on to the do the extra papers and my LPC to become a solicitor precisely for the reasons I gave and EmmaC78 confirms - generally you are simply not valued as much as Solicitors. Indeed although initially I went back to a firm where I had worked as a legal exec I was treated very differently when I moved on to a new firm where I went in as a solicitor and people there never knew I had a legal exec background.
There are a few legal execs who earn good money but again this is unusual and not the norm. It may depend what type of firm you are at. I even know of some solicitors who only earn about £50K or even less is some high street type practice so I suspect in those type of firms the gap may be less. The same can be said for in house solicitors. they generally earn less than those in private practice unless it is a mega company. However my experience is of London firms and decent sized (top tier banding) regionals where I know the salaries have a greater differential between solicitors and legal executives.
I am also not saying that legal executives are intellectually inferior in any way and indeed Level 2 papers are similar to degree level but will just not really be recognised as such by many people.
It is good that you have managed to find an area which is paying as much as solicitors but I assume you mean on the in house type salary rather than private practice.
My advice to someone already working within a law firm who wanted to continue to work as a fee earner with a view to qualifying as a solicitor would be to go that route especially if your firm will pay your fees.
I have a friend who works as a family legal executive and if, fingers crossed I won't need to, I ever needed a divorce lawyer it is a family joke that I get her in the divorce!!
I was merely expressing my opinion to the OP who needs to take on board that whilst there are some lovely forward thinking people out their in the profession there is still a perception that needs to be overcome.