The Britax Marathon is the best all around, IMHO. It can be used rear facing to a high weight limit. It can be used front facing to 65 lbs, and the straps are actually high enough that you may be able to actually use it to 65 lbs even if you have a larger child (unlike that Cosco one that everyone buys and they think will last them forever because it turns into a booster seat). Once they are that weight they can be put in a booster seat, and you can keep them in a 5 pt harness over 40 lbs which is what alot of the convertible seats go to/move to a booster seat at this weight limit. But I am finding that my son is about 40 lbs and no way do I believe he has the maturity to sit in a booster yet. The Marathon is also very convienent, easy to install ....with LATCH it is in there like a rock and not going to move. Plus there is also a tether. Great design. Not cheap, but if you figure the amount of time you will use it, overall it is actually the best buy, and one of the most highly rated seats in safety overall as well.
After also having a Graco travel system, I bought a McClaren Volo when my son was 2. I wanted something light and compact that would also carry my son past 30 lbs cause he was already close to it. It is about $100 which seems alot to spend on a glorified umbrella stroller, but it was the best baby purchase I have ever made. It strolls like a dream.......turns on a dime. Very comfy...seat doesn't lay back, but my son would never fall asleep when we are out and about anyway. It is light and folds up easily, has a carrying strap, and so easy to throw in the car and takes up no room. And best of all.....kids can stay in it up to 50 or 60 lbs. No other stroller has a weight limit like that....I did my research there. There are other fancier versions of this stroller that McClaren makes with seat recline/additional features and more storage underneath (not alot there) but this one suits our needs fine.
Good luck! I know you hate to spend money and find out there were better choices out there.