I am using Javelin (nice name by the way, it reminds me of dragon hunters weapons in classic RPGs) and I can say it's a truly valid option.
I dropped Chrome because of its weight and especially due to its launch time, that was a shame.
Javelin is fast at launching and it runs pretty well, also featuring nice left-right navigation drawers and transparent statusbar and navbar.
But its best feature is for sure the "stack mode", basically implementing background loading of pages in the halo fashion. Definitely a killer!
If you are tired of the stock browser or - like me - disappointed by Chrome, give it a try.