Hiya
The led CND lamp is good and I appreciate the faster cure, 1 minute instead of 2. Downside is the hole is a little smaller and we all know how many clients can’t even manage to get their hand in a big hole without dinging lol and a tad more tricky for feet as it doesn’t have the removeable bottom piece but not really a problem.
The lead has needed a bit of jiggling since the word go and when it stopped connecting I did have to buy a new lead but hey better than a new lamp! And I’ve got the damn thing sellotaped in there now [emoji16]
It cures all my Shellacs perfectly. The answer to your last question depends how old your oldest ones are as they do have a shelf life but certainly I’ve not had any problems with it curing mine. Hope this helps!
(As for whether it’s worth it, imho it’s taking the p... a little bit but worth it to me to have the whole professional system )