You can buy as separate GTM35 but GTM36 came with LMT unit, this is only difference.
If you buy GTM for EU than you have all traffic subscription on GTM ( Croatia and Serbia use free, no subscription needed, so you don't need code )

In GTM with lifetime this subscription is preinstalled:

Traffic Master (United Kingdom)
V-Traffic (France)
Traffic Master (United Kingdom)
TMC Pro (Germany)
Via-Michelin (France)
TMobilis (Benelukx)
Infoblu (Italy)
Destia (Finland, Norway, Sweden)
TrafficNav (Slovenia)