Seeking Recommendations for Most Profitable Pre-paid LTE Internet Operator

I would be grateful for your advice. Until now, I was using the Pre-paid Plus out of necessity (only 3G, I had coverage only from Plus) and bought starters on the alegro but after changing my place of residence I can afford any operator.

So which operator is currently the most profitable?

RBM 5 pre-paid with RWK and DIL service. Look here on the forum and you will find.

Thank you.

RMB5 is the tariff? Could it be any Red Bull starter or a specific one?
Judging by the prices on the alegro, these starters are probably not too easily available / common?

RBM 5 is a tariff. You can buy this starter at a kiosk at the station for PLN 9 with a can of redbull. Don't look at Allegro. The starter is supposed to be RBM5's best. Then you top up every 100 days for PLN 50, i.e. about PLN 15 per month. The trick with RWK is to migrate from another operator to RBM, activate bonuses for transferring the number, and then change the tariff to RBM 5. Then you have a card with DIL (Free LTE Internet) and RWK (Account Validity Year). Then you only charge 5 PLN per month to get the cheapest 600MB package for 5 PLN. The DIL itself is free, but you need to have PLN 30 in your account for it to work. You can also top up such a card once, and then you activate DIL every month. 600MB you turn on cyclic. You must remember to activate the DIL, otherwise you will get this 600MB and you will have a 32kb / s funnel.

I understand. Regarding the second and subsequent activations of DIL, do they have to be exactly on the day on which the previous one ends, or maybe a day / several earlier?

You cannot activate an active service.

In other words, do I have to remember to do it manually?

An SMS comes about disabling the service.
You have to remember about the date if the modem does not receive SMS.

http://www.telepolis.pl/forum/viewtopic.php?f=22&t=86074&start=2250

Is this method still valid ?:

RBM 5 pre-paid with RWK and DIL service.