Classes

[Tim_vani_Gym]

I've been on "Hoer" class for the majority of my play time.

Is there any reason to switch between classes? Other than the "bonuses" they give.

[Jinky]

Yes you also get more starting talent points. So you really want to try and keep them all around the same lvl.

[Huillam]

Every 100 level you're given a bonus talent point. That point is available at the start of a reincarnation no matter the class.
The path challenges force you to play a specific class: having leveled every classes make it easier to earn experience and progress.

[Icepick]

The top players use Freeloader mostly as they have the best drop rate and you will get more material to boost gear which affects your RL gain not to metion every aspect of the game. But as the 2 comments above, you want to boost the level of all classes to gain TP.

[Warr]

I've found that rotating between Harvester, Rancher, and Freeloader is very effective due to their unique class skill keystones. Harvester boosts your worm find, so you run that and fill all the +worm nodes you can, then cash in on a bunch of cow purchases, then run Rancher for the +milk nodes it offers and at later ascension stages, max out all the milk bonus nodes on the extended trees. Freeloader is good for a run where you target gear upgrades and reincarnation levels, since the keystone nodes for +reincarnation are right next to the gear boosting nodes.

Every so often, Ill do a quick run on the Farmer, Smasher, and Hoer classes to pop their max level up so that I have more skill points to spend on my main runs with the other 3 classes. I'll usually prioritize getting larva on those runs (the Farmer, Smasher, and Hoer ones).

Hope this helps. A bit of this may be over your head, but will make more sense the deeper you get into the game.