Real speakers require real amping. So you'll also need to consider what amp or AV receiver you want to get.
There are many bookshelf speakers that have under-stated looks that sound nothing like kids-toys. Wharfedale Diamond series comes to mind. These are more adultish if that's what you're looking for without spending thousands.
The bigger speakers really need larger rooms for the purchase to make any sense. Bigger speakers throw a bigger sound (simple physics here), but need a bigger room otherwise the sound gets choked up.
So consider your room size. If you want big speakers for big bass, but only have a small room, maybe you should get some bookshelf speakers and a sub-woofer.
If you do have the space and just want loads of volume but you're also on a budget, maybe you should look for vintage hifi equipment.
A big set of speakers can sometimes cost you less than $50 if you look in the right place or snag a bargain. With amps it's the same story.
If you want to buy new, and want a BIG sound, maybe consider some floor-standers. Their larger enclosures give the sound a much 'larger' presentation, and most of the big ones do go fairly loud.
If you do get floorstanders, spend a bit more as the cheap ones are just boomy bass fart monsters, and sound terrible next to some cheap large 3-way speakers.
I wouldn't pay too much attention to the actual wattage of speakers - the wattage game is almost exclusively played by the car audio industry, which frequently claims wattages of over 9000!!!!.... which in actual real money doesn't count for much.
Even a simple 70 watt vintage hifi can easily reach painfully loud volumes.
Sorry if these are not the answers you seek, but you didn't give much to go on (room size, budget, sound preferences, genres, useage (movie, music, gaming), styling preferences etc) room size is 25 feet by 30 feet, budget is unlimited but the reasoning point is no more than 1500, soundpref is HEAVY bass. genres mostly metal and NDH. movies and music. gaming is done with astro a50s. not sure what styling preferences means haha...
im looking to buy new or used aslong as the used ones don't look like they got hit buy a slow moving bus. any brands of floor standers you can recommend me to look up ? I already have a amp and reciver to hook these up with