Melee is mostly bound to weapons and the actual level of your character doesn't matter
Well, if progression is the only thing you care about, spell casters will give you the best experience as a new player because they literally scale as you level up. In fact, the only thing that will give you significant damage boost is going to be the level of your main spell. Difference in damage between a level 20 and 21 spell gem is going to be around ~15% increase. Level 20 vs 24(so a lvl 21 gem with a lvl 4 empower support) would almost double your damage.
Melee is mostly bound to weapons and the actual level of your character doesn't matter. If your weapon is bad, so will your character. There are hundreds of leveling unique weapons and most of them are going to be better than whatever you can get from a spell. Melee doesn't require constant increase in links, either. Just change your crap weapon for a better one and you're set to continue your journey.

May
Path of Exile Skill Revamps - Part 6
It's only 3 days to the releasing of POE Incursion League, which is the core content of 3.3.0 updates. And GGG's Skill Revamps has proceeded to part 6, so I'd like to show you more details about Skill Revamps - Part 6

Oct
Frost wall spell was set to 100% chance to block your projectiles again in POE
Most cold projectiles shatter on impact ( arctic breath, cold shot), this would be the cold version of poe Orb of storm for lightning.

Nov
The new Exile Mods would have to be significantly better than the current
therefore, the current perfect gear will always be better, unless GGG decides to add gear that you can use less than 300 chaos on.

Aug
poe4orbs:PoE 3.19 Top League Starter Builds Guide
Here is latest and best PoE 3.19 Lake Of Kalandra League Starter Builds for beginner, each video guide is attached with a pob link for players' reference.

Apr
PoE 3.14 Ultimatum Top Shadow Starter Builds
Poe4orb has prepared the latest PoE 3.14 Ultimatum Top Shadow Starter Builds collection. Check out these most popular ultimatum builds of Saboteur, Trickster, Assassin now!