A common dilemna. After 2.5 years, I'm still building my supply, but like you, am tempted by many of the LE kits. Unfortunately, I have some wines that are 2-ish years old now and I'm seeing supplies on those dwindle and I need to re-do them. In my limited experience, I'd say the LE wines are on par or a little better each of the manufacturers' top line. So in WE, you're getting an Eclipse quality kit. With Cellar Craft, it's Showcase quality and with RJS, expect En Primeur. That doesn't solve your dilemna though. I'm finding that a lot of the LE kits are varietals or blends that you don't normally see in stores and I tend to go for those. Something like the "Volcanic Red" from Cellar Craft doesn't interest me since I can make that myself with grapes if I want that blend, there's plenty of wines like that in stores, and there are other kits out there that while not the same, could be very similar. I weigh all those things when deciding what LE kits to do.
My Winery Series Super Tuscan is getting low and I was going to make another early next year. WE is actually doing a LE Super Tuscan, so I'll take a chance and do that one instead. I'm 'killing two birds', as the saying goes by doing a LE, but replacing a wine that is very good and in a style that works in a lot of different settings. You just need to look at what you like to drink, compared to what you don't have in stock. As much as I think we'd all like to, we can't go out and make one of everything right away, so we need to weigh the pros and cons of each kit buying decision and know that it'll take time to get the wide-ranging variety we'd like to have in our cellars.
That's WAY more than you asked.
Bottom line, the LE kits are high quality. But just because they are high quality doesn't mean you should make them.