Please Help Weed Them Out

Hello All,  I'm interested in a set of headphones to plug into my Benchmark HPA-4 pre-amp with headphone amp. My needs are as follows:

Over the ear closed back with good isolation

"V" shaped sound signature as my past headphones Senheiser HD600 had almost no bass to speak of. Music taste mostly soft rock and jazz

3.5mm TS connectors so I can use a 15 foot Balanced cable I already have.

Now for the kicker... my budget is $100 to $300  I have seen some (Hifiman), but I don't know if they have good bass, or if they're like the Senheiser 600's

Please any suggestions to start me on the right path will be helpful.