Each camp has it's own followers.
Premiere has a larger user base & because of this a larger number of third party plug-ins , filters etc.
I personally find Vegas very easy to use , it is not hardware dependant & runs well on even modest PCs.
Most Vegas users are converted Premiere users.
Get free trials for both & try them yourself.
Vegas has in the last year been bought by Sony & this has not had a detrimental affect on Vegas' fantastic user support. Vegas + DVD Architect bundle also has a Dolby certified surround encoder (if creating DVDs is important for you). A standalone 5.1 Dolby encoder can cost £1000 on it's own
For text editing I actally use Boris Graffiti plug-in for Vegas (which is very versatile & I'm sure would do anything you want but is quite complex)
I would also look at the user forums of both products & see which camp have the most disgruntled customers (bugs).
It is likely both products will have feature sets beyond what you will ever need to do & are capable of producing professional output for commercial TV stations.
Perhaps your editing skill will grow with the product.
Good Luck
P.S.
Ulead's Cool3D Production Studio is a cheap , good value, versatile program for text creation. You could use that with your current editor (if that is your only concern). I have used that to create titles in Vegas before & it is really good for the money.