much as i like my Grado SR60 and 125, i wouldn't necessarily call them bassy. the Grados are very forgiving when it comes to the source you're using. but i've yet to hear a "bassy" pair of grados.
i brought the HD280's to replace my Bose Triports, and to put it mildly i was very disappointed. i found the bass very recessed.
My HD25, i've had for over 10 years, and with a touch of refurbishment, i still think they're amazing. i never thought that bass was their strong point, but attached to my Go-Vibe V5 headphone amp, the HD25's really thump.
you can get them for under £100.
http://www.rebelio.co.uk/app/urwfilt...ack/index.html
My Denon AH-D1000's arrived yesterday, and they are very light weight and they sound great.
http://www.hifibitz.co.uk/product.asp?id=6072
i know the country is in very short supply for the AH-D1000, because i rang 6 merchants (after i'd made my order) and no-one had them in stock.
if you're thinking of the Grado's, then why not go for the Alessandro MS-1?
http://www.alessandro-products.com/headphones.html
$99 shipped, but you might get stung by customs. i got stung once for my
Equation Audio RP21's this week, it cost me £25.34, but for the MS-1's, that means they're still cheaper than the equivalent SR60 or SR80 ( the MS-1's are based on the 80's).