Bigger size: RX200S, might do a little research but the RX200 has an issue with longer 510 connection pins and the S version isn't supposed to, but being new there may be other issues and worth searching a little, but either are great.
Smaller: If you're ok with 75w or less the Pico is pretty great.
Both well under the $100 price tag, though don't forget to include batteries in your price comparisons.