Hardtail frame sizes?

swindon jay
swindon jay Posts: 23
edited June 2007 in XC and Enduro
hi people hope you can help me. im looking to buy a hardtail frame for i guess whats classed as aggressive cross country. im 5'11 and have a big build so want something that will take abuse when needed. most of the frames that i have found that look solid seem to be quite small. i.e around 14 to 15.5".
does anybody ride know if i bought one with a fairly long top tube if this would build up to be an ok bike to ride?

or does anybody have a similar sort of bike, i do like the small frame as they look more chuckable, but i might just be talking s#*t.

thanks for any help recieved.